Reference code: | PT/FB/BL-2012-266.03 |
Location: | Arquivo PCA - Pasta 5/2012
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Title:
| The impact of attention and mindfulness meditation on sensory information processing startle modification
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Publication year: | 2014
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URL:
| http://www.bacn.co.uk/docs/meetings_127_445439455.pdf
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Abstract/Results: | ABSTRACT:
The magnitude of the human eye blink reflex to a strong startle-eliciting sensory stimulus, the pulse, is reduced if this is preceded shortly by a weak prestimulus, the 52 prepulse. This effect is known as prepulse inhibition (PPI) and considered to index sensorimotor gating function. PPI is stronger with monaural, than binaural, acoustic prestimuli in healthy people (1, 2) as well in schizophrenia (2) and related populations (3). It is presently unknown why monaural prepulses produce more PPI than binaural prepulses. Our aim was to investigate the possibility that monaural prepulses are experienced as more salient or attention-capturing (unambiguous to locate and hence engage bottom-up orienting attention network) than binaural prepulses and, if so, this would be expected to result in stronger PPI. The effect of verbal and visuospatial attention manipulations on monaural and binaural PPI was tested in 30 healthy people from the general population, as well as 30 experienced mindfulness meditation practitioners. Attention manipulation similarly reduced PPI in both groups, and this was most strongly evident for PPI with right ear prepulses under visuospatial attention manipulation. Mediators detected more targets than mediation-naïve individuals during attention tasks. Spatial attention processes contribute to greater monaural PPI, particularly with right ear,prepulses. Similar attentional modulation of PPI despite better performance in meditators, relative to meditation-naïve individuals, suggests that they may have a stronger information processing capacity.
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Accessibility: | Document exists in file
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Language:
| eng
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Author:
| Kumari, V.
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Secondary author(s):
| Hamid, A., Brand, A., Antonova, E.
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Document type:
| Abstract book
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Number of reproductions:
| 3
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Reference:
| Kumari, V., Hamid, A., Brand, A., & Antonova, E. (2014). The impact of attention and mindfulness meditation on sensory information processing startle modification. Abstract Book of the 2014 British Association for Cognitive Neuroscience Annual Scientific Meeting. The University of York, UK
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Indexed document: | No
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Keywords: | Attention / Startle / Meditation / Human sensorimotor gating
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The impact of attention and mindfulness meditation on sensory information processing startle modification |