Attentional stimulus selection through selective synchronization between monkey visual areas.
Attentional stimulus selection through selective synchronization between monkey visual areas.
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DOI:
10.1016/j.neuron.2012.06.037
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发表时间:
2012-09-06
期刊:
影响因子:
16.2
通讯作者:
Fries P
中科院分区:
文献类型:
--
作者:
Bosman CA;Schoffelen JM;Brunet N;Oostenveld R;Bastos AM;Womelsdorf T;Rubehn B;Stieglitz T;De Weerd P;Fries P
A central motif in neuronal networks is convergence, linking several input neurons to one target neuron. In visual cortex, convergence renders target neurons responsive to complex stimuli. Yet, convergence typically sends multiple stimuli to a target, and the behaviorally relevant stimulus must be selected. We used two stimuli, activating separate electrocorticographic V1 sites, and both activating an electrocorticographic V4 site equally strongly. When one of those stimuli activated one V1 site, it gamma-synchronized (60–80 Hz) to V4. When the two stimuli activated two V1 sites, primarily the relevant one gamma-synchronized to V4. Frequency bands of gamma activities showed substantial overlap containing the band of inter-areal coherence. The relevant V1 site had its gamma peak frequency 2–3 Hz higher than the irrelevant V1 site, and 4–6 Hz higher than V4. Gamma-mediated inter-areal influences were predominantly directed from V1 to V4. We propose that selective synchronization renders relevant input effective, thereby modulating effective connectivity.
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DOI:
10.1073/pnas.1011284108
发表时间:
2011-07-05
影响因子:
11.1
作者:
Buffalo, Elizabeth A.;Fries, Pascal;Desimone, Robert
通讯作者:
Desimone, Robert
DOI:
10.1126/science.1171402
发表时间:
2009-05-29
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
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通讯作者:
Desimone R
影响因子:
4.3
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通讯作者:
Deco, Gustavo
影响因子:
56.9
作者:
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通讯作者:
Miller, Earl K.
影响因子:
16.2
作者:
Hipp, Joerg F.;Engel, Andreas K.;Siegel, Markus
通讯作者:
Siegel, Markus