Neuroscience Center, University of Helsinki, Helsinki, Finland.
Prog Brain Res. 2011;193:335-50. doi: 10.1016/B978-0-444-53839-0.00022-3.
Spontaneous brain activity across many time scales influences sensory perception and human cognitive performance. Empirical insight into the underlying systems-level mechanisms has, however, remained fragmented. We review here recent studies on how wideband scale-free and scale-specific neuronal activity fluctuations together bias sensory processing and perceptual performance. We posit that these fluctuations constitute the neurophysiological foundation for both the trial-to-trial behavioral variability and the scaling laws governing psychophysical performance.
大脑在多个时间尺度上的自发活动会影响感觉感知和人类认知表现。然而，对于潜在的系统级机制的实证洞察力仍然是零散的。我们在这里回顾了最近的研究，这些研究探讨了宽带无标度和特定标度的神经元活动波动如何共同影响感觉处理和感知表现。我们假设这些波动构成了行为变异性和支配心理物理表现的标度定律的神经生理基础。
