Document Detail

Individual peak gamma frequency predicts switch rate in perceptual rivalry.
MedLine Citation:
PMID:  25271195     Owner:  NLM     Status:  Publisher    
Perceptual rivalry-the experience of alternation between two mutually exclusive interpretations of an ambiguous image-provides powerful opportunities to study conscious awareness. It is known that individual subjects experience perceptual alternations for various types of bistable stimuli at distinct rates, and this a stable, heritable trait. Also stable and heritable is the peak frequency of induced gamma-band (30-100 Hz) oscillation of a population-level response in occipital cortex to simple visual patterns, which has been established as a neural correlate of conscious processing. Interestingly, models for rivalry alternation rate and for the frequency of population-level oscillation have both cited inhibitory connections in cortex as crucial determinants of individual differences, and yet the relationship between these two variables has not yet been investigated. Here, we used magnetoencephalography to compare differences in alternation rate for binocular and monocular types of perceptual rivalry to differences in evoked and induced gamma-band frequency of neuromagnetic brain responses to simple nonrivalrous grating stimuli. For both types of bistable images, alternation rate was inversely correlated with the peak frequency of late evoked gamma activity in primary visual cortex (200-400 ms latency). Our results advance models of inhibition that account for subtle variation in normal visual cortex, and shed light on how small differences in anatomy and physiology relate to individual cognition and performance. Hum Brain Mapp, 2014. © 2014 Wiley Periodicals, Inc.
Jeremy D Fesi; Janine D Mendola
Related Documents :
25459875 - Frequency of spontaneous bold signal shifts during infancy and correlates with cognitiv...
6742175 - Circannual rhythms of body weight in pallid bats.
17453845 - Daily laying time in free-living european starlings: solar noon, a potential synchronizer.
2743175 - Selection experiment for increased egg production under 23 h and 24 h light-dark cycles...
17136525 - Muscle activation and cutaneous reflex modulation during rhythmic and discrete arm task...
21464975 - Juvenile songbirds compensate for displacement to oceanic islands during autumn migration.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-10-1
Journal Detail:
Title:  Human brain mapping     Volume:  -     ISSN:  1097-0193     ISO Abbreviation:  Hum Brain Mapp     Publication Date:  2014 Oct 
Date Detail:
Created Date:  2014-10-1     Completed Date:  -     Revised Date:  2014-10-2    
Medline Journal Info:
Nlm Unique ID:  9419065     Medline TA:  Hum Brain Mapp     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2014 Wiley Periodicals, Inc.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Mobility of Vulnerable Elders Study: Effect of the Sit-to-Stand Activity on Mobility, Function, and ...
Next Document:  Functional performance and plasma cytokine levels in elderly women with and without low back pain.