Tuned normalization explains the size of attention modulations.
Tuned normalization explains the size of attention modulations.
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DOI:
10.1016/j.neuron.2012.01.006
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发表时间:
2012-02-23
期刊:
影响因子:
16.2
通讯作者:
Maunsell JH
中科院分区:
文献类型:
--
作者:
Ni AM;Ray S;Maunsell JH
The effect of attention on firing rates varies considerably within a single cortical area. The firing rate of some neurons is greatly modulated by attention while others are hardly affected. The reason for this variability across neurons is unknown. We found that the variability in attention modulation across neurons in area MT of macaques can be well explained by variability in the strength of tuned normalization across neurons. The presence of tuned normalization also explains a striking asymmetry in attention effects within neurons: when two stimuli are in a neuron’s receptive field, directing attention to the preferred stimulus modulates firing rates more than directing attention to the non-preferred stimulus. These findings show that much of the neuron-to-neuron variability in modulation of responses by attention depends on variability in the way the neurons process multiple stimuli, rather than differences in the influence of top-down signals related to attention.
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影响因子:
3
作者:
CRIST, CF;YAMASAKI, DSG;WURTZ, RH
通讯作者:
WURTZ, RH
影响因子:
1.8
作者:
Boynton GM
通讯作者:
Boynton GM
影响因子:
13.9
作者:
Bisley JW;Goldberg ME
通讯作者:
Goldberg ME
影响因子:
2.5
作者:
Boudreau, C. Elizabeth;Williford, Tori H.;Maunsell, John H. R.
通讯作者:
Maunsell, John H. R.
DOI:
10.1523/jneurosci.6776-10.2011
发表时间:
2011-03-30
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Chaisanguanthum KS;Lisberger SG
通讯作者:
Lisberger SG