Curtis John C, Kleinfeld David
Graduate Program in Computational Neuroscience, University of California at San Diego, La Jolla, California 92037, USA.
Neuron. 2006 May 18;50(4):524-6. doi: 10.1016/j.neuron.2006.05.004.
The behavioral state of an animal is accompanied by ongoing brain activity that primes neuronal circuitry to sensory inputs. While it should come as no surprise that the pattern of cortical activation is tied to behavioral states, only now has this dependence been imaged. In this issue of Neuron, Ferezou, Bolea, and Petersen show that the level and spatial extent of activation of vibrissa sensory cortex critically depend on behavioral context and mode of stimulation, i.e., passive versus active contact.
动物的行为状态伴随着持续的大脑活动，这种活动使神经回路对感觉输入做好准备。虽然皮层激活模式与行为状态相关并不令人惊讶，但直到现在这种依赖性才得以成像。在本期《神经元》杂志中，费雷祖、博莱亚和彼得森表明，触须感觉皮层的激活水平和空间范围严重依赖于行为背景和刺激方式，即被动接触与主动接触。
