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Fine-tuned coupling between human parahippocampal ripples and sleep spindles

2011

BIAL Foundation Archive
- BIAL Grants
  - 2006 Grants
    - 154 - High-frequency oscillations and rhythmic slow activity during virtual navigation, REM sleep and wake-sleep transitions: Studies on intracranial recordings in humans
      - Fine-tuned coupling between human parahippocampal ripples and sleep spindles

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-2006
Location:	Arquivo PCA - Pastas 1 a 22 /2006
Title:	2006 Grants
Start date:	2007-01 - 2013-11
Dimension/support:	22 caixas de arquivo

Reference code:	PT/FB/BL-2006-154
Location:	Arquivo PCA - Pasta 5/2006
Title:	154 - High-frequency oscillations and rhythmic slow activity during virtual navigation, REM sleep and wake-sleep transitions: Studies on intracranial recordings in humans
Duration:	2008-01 - 2009-10
Researcher(s):	Péter Halász, Zsófia Clemens, Csaba Borbély, Daniel Fabó
Institution(s):	Budapest-Bethel Epilepsy Center Foundation (BBEC), Budapest (Hungary)
Contents:	Contents: Bursary agreement Application form Correspondence Financial report and expenditure documents Progress reports Final report
Language:	eng
Author:	Halász, P.
Secondary author(s):	Clemens, Z., Borbély, C., Fabó, D.
Number of reproductions:	1
Keywords:	Psychophysiology / Brain structure and function / Sleep and dreams / Biopsychological problems / Diseases/Injuries / Epilepsy

Reference code:	PT/FB/BL-2006-154.04
Location:	Arquivo PCA - Pasta 5/2006
Title:	Fine-tuned coupling between human parahippocampal ripples and sleep spindles
Publication year:	2011
URL:	http://onlinelibrary.wiley.com/doi/10.1111/j.1460-9568.2010.07505.x/pdf
Abstract/Results:	ABSTRACT: Sleep-associated memory consolidation is thought to rely on coordinated information transfer between the hippocampus and neocortex brought about during slow wave sleep (SWS) by distinct local field potential oscillations. Specifically, findings in animals have led to the concept that ripples originating from hippocampus combine with spindles to provide a fine-tuned temporal frame for a persistent transfer of memory-related information to the neocortex. The present study focused on characterizing the temporal relationship between parahippocampal ripple activity (80-140 Hz) and spindles recorded from frontal, parietal and parahippocampal cortices in 12 epilepsy patients implanted with parahippocampal foramen ovale electrodes. Overall, parietal and parahippocampal spindles showed closer relationships to parahippocampal ripple activity than frontal spindles, with the latter following parietal and parahippocampal spindles at a variable delay of up to 0.5 s. On a timescale of seconds, ripple activity showed a continuous increase before the peak of parietal and parahippocampal spindles, and decreased thereafter. At a fine timescale of milliseconds, parahippocampal ripple activity was tightly phase-locked to the troughs of these spindles. The demonstration of spindle phase-locked ripple activity in humans is consistent with the idea of a temporally fine-tuned hippocampus-to-neocortex transfer of information taking place during SWS.
Accessibility:	Document does not exist in file
Language:	eng
Author:	Clemens, Z.
Secondary author(s):	Mölle, M., Eross, L., Jakus, R., Rásonyi, G., Halász, P., Born, J.
Document type:	Article
Number of reproductions:	1
Reference:	Clemens, Z., Mölle, M., Eross, L., Jakus, R., Rásonyi, G., Halász, P., & Born, J. (2011). Fine-tuned coupling between human parahippocampal ripples and sleep spindles. European Journal of Neuroscience, 33(3), 511-520. https://doi.org/10.1111/j.1460-9568.2010.07505.x
2-year Impact Factor:	3.631\|2011
Times cited:	162\|2025-02-10
Indexed document:	Yes
Quartile:	Q2
Keywords:	Epilepsy / Hippocampus / Ripples / Sleep / Spindles
Fine-tuned coupling between human parahippocampal ripples and sleep spindles