Abstract:
:We carried out voltage-sensitive dye imaging of the guinea pig auditory cortex to determine whether the ongoing and spontaneous activities of the cortex exhibit spatial coherence reflecting the tonotopic organization of the cortex. We used independent component analysis and a signal-plus-noise model to extract ongoing activities from the observed signals including physiological noise and stimulus-evoked activities. We analyzed the cross-correlations of background activities between all pairs of recording channels and found that ongoing and spontaneous activities in the auditory cortex exhibited anisotropic spatial coherence extending along the isofrequency bands.
journal_name
Neurosci Resjournal_title
Neuroscience researchauthors
Yoshida T,Sakagami M,Katura T,Yamazaki K,Tanaka S,Iwamoto M,Tanaka Ndoi
10.1016/j.neures.2008.01.007subject
Has Abstractpub_date
2008-05-01 00:00:00pages
49-55issue
1eissn
0168-0102issn
1872-8111pii
S0168-0102(08)00029-1journal_volume
61pub_type
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