Perceptually unidentifiable stimuli influence cortical processing and behavioral performance.
Perceptually unidentifiable stimuli influence cortical processing and behavioral performance.
复制标题
知觉上无法识别的刺激影响皮层加工和行为表现。
DOI:
10.1038/s41467-020-19848-w
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发表时间:
2020-11-30
影响因子:
16.6
通讯作者:
Dragoi V
中科院分区:
文献类型:
--
作者:
Pojoga SA;Kharas N;Dragoi V
Our daily behavior is dynamically influenced by conscious and unconscious processes. Although the neural bases of conscious experience have been extensively investigated over the past several decades, how unconscious information impacts neural circuitry and behavior remains unknown. Here, we recorded populations of neurons in macaque primary visual cortex (V1) to find that perceptually unidentifiable stimuli repeatedly presented in the absence of awareness are encoded by neural populations in a way that facilitates their future processing in the context of a behavioral task. Such exposure increases stimulus sensitivity and information encoded in cell populations, even though animals are unaware of stimulus identity. This phenomenon is consistent with a Hebbian mechanism underlying an increase in functional connectivity specifically for the neurons activated by subthreshold stimuli. This form of unsupervised adaptation may constitute a vestigial pre-attention system using the mere frequency of stimulus occurrence to change stimulus representations even when sensory inputs are perceptually invisible. Perceptually unidentifiable stimuli are encoded in the visual cortex, such as to facilitate their future processing in a task context. This form of priming may constitute a pre-attention mechanism using the mere frequency of stimulus occurrence to change stimulus representations, even when sensory inputs are perceptually invisible.
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影响因子:
64.8
作者:
Gutnisky, Diego A.;Dragoi, Valentin
通讯作者:
Dragoi, Valentin
影响因子:
16.2
作者:
Hansen BJ;Chelaru MI;Dragoi V
通讯作者:
Dragoi V
影响因子:
25
作者:
Dragoi, V;Sharma, J;Sur, M
通讯作者:
Sur, M
DOI:
10.1073/pnas.96.4.1790
发表时间:
1999-02-16
影响因子:
11.1
作者:
Bar, M;Biederman, I
通讯作者:
Biederman, I
影响因子:
64.8
作者:
Dehaene, S;Naccache, L;Le Bihan, D
通讯作者:
Le Bihan, D