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File153 - The neural basis of attention disorder in schizophrenia2005-022007-02

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2004
Location: Arquivo PCA - Pastas 1 a 25/2004
Title:
2004 Grants
Start date: 2005-01 - 2012-09
Dimension/support:
25 caixas de arquivo

Reference code: PT/FB/BL-2004-153
Location: Arquivo PCA - Pasta 10/2004
Title:
153 - The neural basis of attention disorder in schizophrenia
Duration: 2005-02 - 2007-02
Researcher(s):
Trevor Crawford, Bill Deakin, Stephen Higham
Institution(s): Mental Health Research Unit (Lancaster) & Neuroscience and Psychiatry Unit (Manchester) (UK)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Financial report and expenditure documents
Progress report
Final report
Language: eng
Author:
Crawford, T. J.
Secondary author(s):
Deakin, B., Higham, S.
Number of reproductions:
1
Keywords:
Psychophysiology / Cognitive processes / Attention / Brain structure and function / Biopsychological problems / Mental health / Psychotic disorders
DocumentFinal report - The neural basis of attention disorder in schizophrenia2007

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2004
Location: Arquivo PCA - Pastas 1 a 25/2004
Title:
2004 Grants
Start date: 2005-01 - 2012-09
Dimension/support:
25 caixas de arquivo

Reference code: PT/FB/BL-2004-153
Location: Arquivo PCA - Pasta 10/2004
Title:
153 - The neural basis of attention disorder in schizophrenia
Duration: 2005-02 - 2007-02
Researcher(s):
Trevor Crawford, Bill Deakin, Stephen Higham
Institution(s): Mental Health Research Unit (Lancaster) & Neuroscience and Psychiatry Unit (Manchester) (UK)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Financial report and expenditure documents
Progress report
Final report
Language: eng
Author:
Crawford, T. J.
Secondary author(s):
Deakin, B., Higham, S.
Number of reproductions:
1
Keywords:
Psychophysiology / Cognitive processes / Attention / Brain structure and function / Biopsychological problems / Mental health / Psychotic disorders

Reference code: PT/FB/BL-2004-153.01
Location: Arquivo PCA - Pasta 10/2004
Title:
Final report - The neural basis of attention disorder in schizophrenia
Publication year: 2007
URL:
http://www.bial.com/fotos/gca/1188987649bolsa15304.pdf
Abstract/Results: RESULTS:
1. A deficit in executing antisaccades is commonly observed in schizophrenia. In addition, one cognitive feature of schizophrenia is a deficit in the ability to reorient attention away from salient events in the periphery. We did not find evidence for abnormal crossmodal attention-capture, using an auditory cue. Relative to control participants, schizophrenic participants generated slower responses when attention was triggered to the other side of the display.
2. Under standard conditions prosaccades are generated more quickly than antisaccades and with fewer errors. However with illusory line motion there was reversed effect, with more correctly directed antisaccades than prosaccades and prosacade latencies were slower than antisaccade latencies. These results support the hypothesis that attentional reorientation is a major factor in the control of antisaccades, and a critical factor in the deficit of antisaccades in schizophrenia.
3. Research on behavioural inhibition in schizophrenia is heavily dependent on the antisaccade task. We have developed a novel task that will enable us to characterise inhibition more precisely. This novel test has the following features: eye movements are naturalistic; (2) Spatial field of inhibition is readily mapped; (3) Temporal duration of inhibition easily measured. Most importantly, the failure of inhibitory control is indexed by faster saccade responses to the critical stimulus display. Thus, in contrast to the majority of available behavioural tasks, a functional impairment in the patients is indexed by ‘better/faster’ performance in this group. This is important because it ensures that any abnormality is not a non-specific effect of poor task compliance, task complexity or poor motivation.
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Author:
Crawford, T. J.
Document type:
Final report
Number of reproductions:
1
Indexed document:
No
Keywords: Psychophysiology / Schizophrenia / Antisaccades / Prosaccades / Attention

Final report - The neural basis of attention disorder in schizofrenia

Final report - The neural basis of attention disorder in schizofrenia
DocumentThe effects of illusory line motion on incongruent saccades: Implications for saccadic eye movements and visual attention2006

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2004
Location: Arquivo PCA - Pastas 1 a 25/2004
Title:
2004 Grants
Start date: 2005-01 - 2012-09
Dimension/support:
25 caixas de arquivo

Reference code: PT/FB/BL-2004-153
Location: Arquivo PCA - Pasta 10/2004
Title:
153 - The neural basis of attention disorder in schizophrenia
Duration: 2005-02 - 2007-02
Researcher(s):
Trevor Crawford, Bill Deakin, Stephen Higham
Institution(s): Mental Health Research Unit (Lancaster) & Neuroscience and Psychiatry Unit (Manchester) (UK)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Financial report and expenditure documents
Progress report
Final report
Language: eng
Author:
Crawford, T. J.
Secondary author(s):
Deakin, B., Higham, S.
Number of reproductions:
1
Keywords:
Psychophysiology / Cognitive processes / Attention / Brain structure and function / Biopsychological problems / Mental health / Psychotic disorders

Reference code: PT/FB/BL-2004-153.02
Location: Arquivo PCA - Pasta 10/2004
Title:
The effects of illusory line motion on incongruent saccades: Implications for saccadic eye movements and visual attention
Publication year: 2006
URL:
http://link.springer.com/article/10.1007%2Fs00221-006-0392-z
Abstract/Results: ABSTRACT:
A complex neural problem must be solved before a voluntary eye movement is triggered away from a stimulus (antisaccade). The location code activated by a stimulus must be internally translated into an appropriate signal to direct the eyes into the opposite visual field, while the reflexive tendency to look directly at the stimulus must be suppressed. No doubt these extra processes contribute to the ubiquitous slowing of antisaccades. However, there is no consensus on the cognitive mechanisms that contribute to the antisaccade programme. Visual attention is closely associated with the generation of saccadic eye movements and it has been shown that attention will track an illusion of line motion. A series of experiments combined this illusion with a saccadic eye movement that was congruent (i.e. directed towards), or incongruent with (i.e. direct away from), a peripheral target. Experiment 1 showed that congruent saccades had faster reaction times than incongruent saccades. In contrast, Experiments 2 and 3 demonstrated that, with illusory line motion, incongruent saccades now had faster reaction times than congruent saccades. These findings demonstrate that an illusory phenomenon can accelerate the processing of an incongruent relative to a congruent saccade.
Accessibility: Document does not exist in file
Language:
eng
Author:
Crawford, T. J.
Secondary author(s):
Kean, M., Klein, R. M., Hamm, J. P.
Document type:
Article
Number of reproductions:
1
Reference:
Crawford, T. J., Kean, M., Klein, R. M., & Hamm, J. P. (2006). The effects of illusory line motion on incongruent saccades: Implications for saccadic eye movements and visual attention. Experimental Brain Research, 173(3), 498-506. https://doi.org/10.1007/s00221-006-0392-z
2-year Impact Factor: 1.959|2006
Times cited: 14|2024-02-05
Indexed document: Yes
Quartile: Q3
Keywords: Antisaccades / Congruent saccade / Illusory line motion / Incongruent saccade / Prosaccades / Spatial attention / Inhibitory control / Working memory
DocumentThe inhibitory effect of a recent distracter2005

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2004
Location: Arquivo PCA - Pastas 1 a 25/2004
Title:
2004 Grants
Start date: 2005-01 - 2012-09
Dimension/support:
25 caixas de arquivo

Reference code: PT/FB/BL-2004-153
Location: Arquivo PCA - Pasta 10/2004
Title:
153 - The neural basis of attention disorder in schizophrenia
Duration: 2005-02 - 2007-02
Researcher(s):
Trevor Crawford, Bill Deakin, Stephen Higham
Institution(s): Mental Health Research Unit (Lancaster) & Neuroscience and Psychiatry Unit (Manchester) (UK)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Financial report and expenditure documents
Progress report
Final report
Language: eng
Author:
Crawford, T. J.
Secondary author(s):
Deakin, B., Higham, S.
Number of reproductions:
1
Keywords:
Psychophysiology / Cognitive processes / Attention / Brain structure and function / Biopsychological problems / Mental health / Psychotic disorders

Reference code: PT/FB/BL-2004-153.03
Location: Arquivo PCA - Pasta 10/2004
Title:
The inhibitory effect of a recent distracter
Publication year: 2005
URL:
http://www.sciencedirect.com/science/article/pii/S0042698905003895
Abstract/Results: ABSTRACT:
A series of experiments were conducted to examine the inhibitory effect of a visual distracter on saccadic eye movements. Participants were presented with a sequence of two critical displays. In one display a red target was presented together with a green distracter. This was followed by a display with a new red target presented in isolation at one of three locations with respect to the previous display. The lone target was presented either at the location of the recent target, the location of the recent distracter, or a new location. Participants were instructed to fixate the target in both displays and to ignore the green distracter. Experiment 1 revealed a significant increase in saccadic reaction times (SRTs) when the target was presented at the location of the recent distracter. Experiment 2 revealed that SRTs increased only in the conditions where the new target was presented at the location of the recent distracter, irrespective of its colour. Experiment 3 found that the inhibitory effect lasted for at least 2 s. In Experiment 4 the inhibitory effect was abolished when a lone distracter (i.e., anti-target) was presented without a target. Experiments 5 and 6 revealed that inhibition at the location of the recent target (‘inhibition-of-return’) also emerged with a shorter inter-display interval and when the distracter was removed from the recent display. These results distinguished between inhibition of a recent distracter and ‘inhibition-of-return’ and are consistent with models of competitive interactions which generate inhibitory effects on the spatial representation of a distracter.
Accessibility: Document does not exist in file
Language:
eng
Author:
Crawford, T. J.
Secondary author(s):
Hill, S., Higham, S.
Document type:
Article
Number of reproductions:
1
Reference:
Crawford, T. J., Hill, S., & Higham, S. (2005). The inhibitory effect of a recent distracter. Vision Research, 45(27), 3365-3378. https://doi.org/10.1016/j.visres.2005.07.024
2-year Impact Factor: 2.027|2005
Times cited: 9|2024-02-05
Indexed document: Yes
Quartile: Q1
Keywords: Attention / Distracter / Inhibition-of-return / Negative priming / Saccadic eye movement

The inhibitory effect of a recent distracter

The inhibitory effect of a recent distracter
DocumentThe role of working memory and attentional disengagement on inhibitory control: effects of aging and Alzheimer's disease2013

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2004
Location: Arquivo PCA - Pastas 1 a 25/2004
Title:
2004 Grants
Start date: 2005-01 - 2012-09
Dimension/support:
25 caixas de arquivo

Reference code: PT/FB/BL-2004-153
Location: Arquivo PCA - Pasta 10/2004
Title:
153 - The neural basis of attention disorder in schizophrenia
Duration: 2005-02 - 2007-02
Researcher(s):
Trevor Crawford, Bill Deakin, Stephen Higham
Institution(s): Mental Health Research Unit (Lancaster) & Neuroscience and Psychiatry Unit (Manchester) (UK)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Financial report and expenditure documents
Progress report
Final report
Language: eng
Author:
Crawford, T. J.
Secondary author(s):
Deakin, B., Higham, S.
Number of reproductions:
1
Keywords:
Psychophysiology / Cognitive processes / Attention / Brain structure and function / Biopsychological problems / Mental health / Psychotic disorders

Reference code: PT/FB/BL-2004-153.04
Location: Arquivo PCA - Pasta 10/2004
Title:
The role of working memory and attentional disengagement on inhibitory control: effects of aging and Alzheimer's disease
Publication year: 2013
URL:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3776119/
Abstract/Results: ABSTRACT:
Patients with Alzheimer's disease have an impairment of inhibitory control for reasons that are currently unclear. Using an eye-tracking task (the gap-overlap paradigm), we examined whether the uncorrected errors relate to the task of attentional disengagement in preparation for action. Alternatively, the difficulty in correcting for errors may be caused by the working memory representation of the task. A major aim of this study was to distinguish between the effects of healthy aging and neurodegenerative disease on the voluntary control of saccadic eye movements. Using the antisaccade task (AST) and pro-saccade task (PST) with the 'gap' and 'overlap' procedures, we obtained detailed eye-tracking measures in patients, with 18 patients with probable Alzheimer's disease, 25 patients with Parkinson's disease and 17 healthy young and 18 old participants. Uncorrected errors in the AST were selectively increased in Alzheimer's disease, but not in Parkinson's disease compared to the control groups. These uncorrected errors were strongly correlated with spatial working memory. There was an increase in the saccade reaction times to targets that were presented simultaneously with the fixation stimulus, compared to the removal of fixation. This 'gap' effect (i.e. overlap-gap) saccade reaction time was elevated in the older groups compared to young group, which yielded a strong effect of aging and no specific effect of neurodegenerative disease. Healthy aging, rather than neurodegenerative disease, accounted for the increase in the saccade reaction times to the target that are presented simultaneously with a fixation stimulus. These results suggest that the impairment of inhibitory control in the AST may provide a convenient and putative mark of working memory dysfunction in Alzheimer's disease.
Accessibility: Document exists in file
Language:
eng
Author:
Crawford, T. J.
Secondary author(s):
Higham, S., Mayes, J., Dale, M., Shaunak, S., Lekwuwa, G.
Document type:
Article
Number of reproductions:
1
Reference:
Crawford, T. J., Higham, S., Mayes, J., Dale, M., Shaunak, S., & Lekwuwa, G. (2013). The role of working memory and attentional disengagement on inhibitory control: effects of aging and Alzheimer's disease. Age (Dordrecht, Netherlands), 35(5), 1637–1650. https://doi.org/10.1007/s11357-012-9466-y
2-year Impact Factor: 3.445|2013
Times cited: 60|2024-02-02
Indexed document: Yes
Quartile: Q1
Keywords: Alzheimer's disease / Parkinson's disease / Attention / Antisaccade / Working memory / Eye tracking

The role of working memory and attentional disengagement on inhibitory control: effects of aging and Alzheimer's disease

The role of working memory and attentional disengagement on inhibitory control: effects of aging and Alzheimer's disease