对《顶叶皮层中的单试次尖峰序列揭示决策过程中的离散步骤》的评论
Comment on "Single-trial spike trains in parietal cortex reveal discrete steps during decision-making".
作者信息
Shadlen Michael N, Kiani Roozbeh, Newsome William T, Gold Joshua I, Wolpert Daniel M, Zylberberg Ariel, Ditterich Jochen, de Lafuente Victor, Yang Tianming, Roitman Jamie
机构信息
Howard Hughes Medical Institute (HHMI) and Department of Neuroscience, Columbia University, New York, NY, USA.
Center for Neural Science, New York University, New York, NY, USA.
出版信息
Science. 2016 Mar 25;351(6280):1406. doi: 10.1126/science.aad3242.
Abstract
Latimeret al (Reports, 10 July 2015, p. 184) claim that during perceptual decision formation, parietal neurons undergo one-time, discrete steps in firing rate instead of gradual changes that represent the accumulation of evidence. However, that conclusion rests on unsubstantiated assumptions about the time window of evidence accumulation, and their stepping model cannot explain existing data as effectively as evidence-accumulation models.
摘要
拉蒂默等人（《报告》，2015年7月10日，第184页）声称，在感知决策形成过程中，顶叶神经元的放电频率经历一次性的离散步骤，而非代表证据积累的逐渐变化。然而，该结论基于关于证据积累时间窗口的未经证实的假设，并且他们的步进模型无法像证据积累模型那样有效地解释现有数据。
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