Synchronization of visual responses in the superior colliculus of awake cats
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Synchronization of visual responses in the superior colliculus of awake cats. / Brecht, M; Goebel, R; Singer, W; Engel, A K.
In: NEUROREPORT, Vol. 12, No. 1, 22.01.2001, p. 43-7.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Synchronization of visual responses in the superior colliculus of awake cats
AU - Brecht, M
AU - Goebel, R
AU - Singer, W
AU - Engel, A K
PY - 2001/1/22
Y1 - 2001/1/22
N2 - Multi-unit responses to moving stimuli were recorded simultaneously from several sites in the superior colliculus of awake cats. Correlation analysis revealed that response synchronization was a prominent feature of visually evoked neural activity in both superficial and deep collicular layers. Responses at about half of the recordings separated by < or = 1 mm showed significant correlations. The synchronized responses oscillated in the gamma frequency range (30-70 Hz) which contrasts to conditions in anaesthetized cats where oscillations predominantly occurred in the alpha and beta frequency range (10-20 Hz). Response synchronization was most pronounced with coherent motion stimuli and broke down with incoherent stimuli. These results agree with previous findings on corticotectal synchronization and support the hypothesis that synchronization in the millisecond range serves to group collicular neurons into functionally coherent assemblies.
AB - Multi-unit responses to moving stimuli were recorded simultaneously from several sites in the superior colliculus of awake cats. Correlation analysis revealed that response synchronization was a prominent feature of visually evoked neural activity in both superficial and deep collicular layers. Responses at about half of the recordings separated by < or = 1 mm showed significant correlations. The synchronized responses oscillated in the gamma frequency range (30-70 Hz) which contrasts to conditions in anaesthetized cats where oscillations predominantly occurred in the alpha and beta frequency range (10-20 Hz). Response synchronization was most pronounced with coherent motion stimuli and broke down with incoherent stimuli. These results agree with previous findings on corticotectal synchronization and support the hypothesis that synchronization in the millisecond range serves to group collicular neurons into functionally coherent assemblies.
KW - Animals
KW - Cats
KW - Evoked Potentials, Visual
KW - Neurons
KW - Photic Stimulation
KW - Superior Colliculi
KW - Wakefulness
M3 - SCORING: Journal article
C2 - 11201089
VL - 12
SP - 43
EP - 47
JO - NEUROREPORT
JF - NEUROREPORT
SN - 0959-4965
IS - 1
ER -