Synchronization of oscillatory responses in visual cortex correlates with perception in interocular rivalry
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Synchronization of oscillatory responses in visual cortex correlates with perception in interocular rivalry. / Fries, P; Roelfsema, P R; Engel, A K; König, P; Singer, W.
in: P NATL ACAD SCI USA, Jahrgang 94, Nr. 23, 11.11.1997, S. 12699-704.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Synchronization of oscillatory responses in visual cortex correlates with perception in interocular rivalry
AU - Fries, P
AU - Roelfsema, P R
AU - Engel, A K
AU - König, P
AU - Singer, W
PY - 1997/11/11
Y1 - 1997/11/11
N2 - In subjects suffering from early onset strabismus, signals conveyed by the two eyes are not perceived simultaneously but in alternation. We exploited this phenomenon of interocular suppression to investigate the neuronal correlate of binocular rivalry in primary visual cortex of awake strabismic cats. Monocularly presented stimuli that were readily perceived by the animal evoked synchronized discharges with an oscillatory patterning in the gamma-frequency range. Upon dichoptic stimulation, neurons responding to the stimulus that continued to be perceived increased the synchronicity and the regularity of their oscillatory patterning while the reverse was true for neurons responding to the stimulus that was no longer perceived. These differential changes were not associated with modifications of discharge rate, suggesting that at early stages of visual processing the degree of synchronicity rather than the amplitude of responses determines which signals are perceived and control behavioral responses.
AB - In subjects suffering from early onset strabismus, signals conveyed by the two eyes are not perceived simultaneously but in alternation. We exploited this phenomenon of interocular suppression to investigate the neuronal correlate of binocular rivalry in primary visual cortex of awake strabismic cats. Monocularly presented stimuli that were readily perceived by the animal evoked synchronized discharges with an oscillatory patterning in the gamma-frequency range. Upon dichoptic stimulation, neurons responding to the stimulus that continued to be perceived increased the synchronicity and the regularity of their oscillatory patterning while the reverse was true for neurons responding to the stimulus that was no longer perceived. These differential changes were not associated with modifications of discharge rate, suggesting that at early stages of visual processing the degree of synchronicity rather than the amplitude of responses determines which signals are perceived and control behavioral responses.
KW - Animals
KW - Cats
KW - Visual Cortex
KW - Visual Perception
M3 - SCORING: Journal article
C2 - 9356513
VL - 94
SP - 12699
EP - 12704
JO - P NATL ACAD SCI USA
JF - P NATL ACAD SCI USA
SN - 0027-8424
IS - 23
ER -
