Visual cortex modulates the magnitude but not the selectivity of looming-evoked responses in the superior colliculus of awake mice.
Visual cortex modulates the magnitude but not the selectivity of looming-evoked responses in the superior colliculus of awake mice.
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DOI:
10.1016/j.neuron.2014.08.037
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发表时间:
2014-10-01
期刊:
影响因子:
16.2
通讯作者:
Cang, Jianhua
中科院分区:
文献类型:
--
作者:
Zhao, Xinyu;Liu, Mingna;Cang, Jianhua
Neural circuits in the brain often receive inputs from multiple sources, such as the bottom-up input from early processing stages and the top-down input from higher-order areas. Here, we study the function of top-down input in the mouse Superior Colliculus (SC), which receives convergent inputs from the retina and visual cortex. Neurons in the superficial SC display robust responses and speed tuning to looming stimuli that mimic approaching objects. The looming-evoked responses are reduced by almost half when the visual cortex is optogenetically silenced in awake, but not in anesthetized mice. Silencing the cortex does not change the looming speed tuning of SC neurons, or the response time course except at the lowest tested speed. Furthermore, the regulation of SC responses by the corticotectal input is organized retinotopically. This effect we revealed may thus provide a potential substrate for the cortex, an evolutionarily new structure, to modulate SC-mediated visual behaviors.
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DOI:
10.1523/jneurosci.4592-10.2011
发表时间:
2011-04-06
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Mysore SP;Asadollahi A;Knudsen EI
通讯作者:
Knudsen EI
影响因子:
64.5
作者:
Triplett JW;Owens MT;Yamada J;Lemke G;Cang J;Stryker MP;Feldheim DA
通讯作者:
Feldheim DA
影响因子:
64.8
作者:
通讯作者:
--
影响因子:
16.2
作者:
Niell CM;Stryker MP
通讯作者:
Stryker MP
影响因子:
5.3
作者:
Wang, Quanxin;Burkhalter, Andreas
通讯作者:
Burkhalter, Andreas