Emergent selectivity for task-relevant stimuli in higher-order auditory cortex.
Emergent selectivity for task-relevant stimuli in higher-order auditory cortex.
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DOI:
10.1016/j.neuron.2014.02.029
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发表时间:
2014-04-16
期刊:
影响因子:
16.2
通讯作者:
Fritz JB
中科院分区:
文献类型:
--
作者:
Atiani S;David SV;Elgueda D;Locastro M;Radtke-Schuller S;Shamma SA;Fritz JB
A variety of attention-related effects have been demonstrated in primary auditory cortex (A1). However, an understanding of the functional role of higher auditory cortical areas in guiding attention to acoustic stimuli has been elusive. We recorded from neurons in two tonotopic cortical belt areas in the dorsal posterior ectosylvian gyrus (dPEG) of ferrets trained on a simple auditory discrimination task. Neurons in dPEG showed similar basic auditory tuning properties to A1, but during behavior we observed marked differences between these areas. In the belt areas, changes in neuronal firing rate and response dynamics greatly enhanced responses to target stimuli relative to distractors, allowing for greater attentional selection during active listening. Consistent with existing anatomical evidence, the pattern of sensory tuning and behavioral modulation in auditory belt cortex links the spectro-temporal representation of the whole acoustic scene in A1 to a more abstracted representation of task-relevant stimuli observed in frontal cortex.
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DOI:
10.1523/jneurosci.5249-08.2009
发表时间:
2009-03-18
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
David SV;Mesgarani N;Fritz JB;Shamma SA
通讯作者:
Shamma SA
影响因子:
13.9
作者:
Feldman DE
通讯作者:
Feldman DE
影响因子:
3.7
作者:
George, Isabelle;Cousillas, Hugo;Hausberger, Martine
通讯作者:
Hausberger, Martine
影响因子:
1.9
作者:
EDELINE, JM;PHAM, P;WEINBERGER, NM
通讯作者:
WEINBERGER, NM
影响因子:
25
作者:
Fritz, Jonathan B.;David, Stephen V.;Radtke-Schuller, Susanne;Yin, Pingbo;Shamma, Shihab A.
通讯作者:
Shamma, Shihab A.