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Differences in Gamma Frequencies across Visual Cortex Restrict Their Possible Use in Computation
 

Summary: Neuron
Article
Differences in Gamma Frequencies across Visual
Cortex Restrict Their Possible Use in Computation
Supratim Ray1,* and John H.R. Maunsell1
1Department of Neurobiology and Howard Hughes Medical Institute, Harvard Medical School, 220 Longwood Avenue, Boston,
MA 02115, USA
*Correspondence: supratim_ray@hms.harvard.edu
DOI 10.1016/j.neuron.2010.08.004
SUMMARY
Neuronal oscillations in the gamma band (3080 Hz)
have been suggested to play a central role in feature
binding or establishing channels for neural communi-
cation. For these functions, the gamma rhythm
frequency must be consistent across neural assem-
blies encoding the features of a stimulus. Here we
test the dependence of gamma frequency on
stimulus contrast in V1 cortex of awake behaving
macaques and show that gamma frequency
increases monotonically with contrast. Changes in

  

Source: Andrzejak, Ralph Gregor - Departament de Tecnologia, Universitat Pompeu Fabra

 

Collections: Computer Technologies and Information Sciences