Slow cortical dynamics and the accumulation of information over long timescales. Neuron 2012 Oct 18;76(2):423-34
Date
10/23/2012Pubmed ID
23083743Pubmed Central ID
PMC3517908DOI
10.1016/j.neuron.2012.08.011Scopus ID
2-s2.0-84867721529 (requires institutional sign-in at Scopus site) 290 CitationsAbstract
Making sense of the world requires us to process information over multiple timescales. We sought to identify brain regions that accumulate information over short and long timescales and to characterize the distinguishing features of their dynamics. We recorded electrocorticographic (ECoG) signals from individuals watching intact and scrambled movies. Within sensory regions, fluctuations of high-frequency (64-200 Hz) power reliably tracked instantaneous low-level properties of the intact and scrambled movies. Within higher order regions, the power fluctuations were more reliable for the intact movie than the scrambled movie, indicating that these regions accumulate information over relatively long time periods (several seconds or longer). Slow (<0.1 Hz) fluctuations of high-frequency power with time courses locked to the movies were observed throughout the cortex. Slow fluctuations were relatively larger in regions that accumulated information over longer time periods, suggesting a connection between slow neuronal population dynamics and temporally extended information processing.
Author List
Honey CJ, Thesen T, Donner TH, Silbert LJ, Carlson CE, Devinsky O, Doyle WK, Rubin N, Heeger DJ, Hasson UAuthor
Chad Carlson MD Professor in the Neurology department at Medical College of WisconsinMESH terms used to index this publication - Major topics in bold
Acoustic StimulationAdult
Brain Mapping
Brain Waves
Cerebral Cortex
Electrodes
Electroencephalography
Epilepsy, Complex Partial
Female
Humans
Male
Mental Processes
Middle Aged
Photic Stimulation
Reaction Time
Reproducibility of Results
Spectrum Analysis
Time Factors
Young Adult
