Shared motion signals for human perceptual decisions and oculomotor actions.
Shared motion signals for human perceptual decisions and oculomotor actions.
复制标题
用于人类感知决策和动眼神经动作的共享运动信号。
作者：
L. Stone;R. Krauzlis
灵长类神经生物学的一个基本问题是了解运动行为在多大程度上是由支持有意识感知的共享神经信号驱动的，还是由专门用于运动控制的独立潜意识神经信号驱动的。虽然已经清楚地确定，参与处理视觉运动的皮层区域支持感知和平滑追踪眼球运动，但仍然不知道这些结构中的相同或不同的神经元集是否执行这两种功能。在同时进行的心理物理和视觉任务中，对人类感知和追求反应的逐个试验变化的检查表明，追求和感知的方向信号不仅平均相似，而且在逐个试验的基础上也是共同变化的，即使当性能处于或接近偶然性并且决定主要由神经噪声决定时。我们的结论是，神经信号编码的目标运动的方向，驱动稳态的追求，并支持并发的感知判断来自一个共享的合奏皮层神经元。
A fundamental question in primate neurobiology is to understand to what extent motor behaviors are driven by shared neural signals that also support conscious perception or by independent subconscious neural signals dedicated to motor control. Although it has clearly been established that cortical areas involved in processing visual motion support both perception and smooth pursuit eye movements, it remains unknown whether the same or different sets of neurons within these structures perform these two functions. Examination of the trial-by-trial variation in human perceptual and pursuit responses during a simultaneous psychophysical and oculomotor task reveals that the direction signals for pursuit and perception are not only similar on average but also co-vary on a trial-by-trial basis, even when performance is at or near chance and the decisions are determined largely by neural noise. We conclude that the neural signal encoding the direction of target motion that drives steady-state pursuit and supports concurrent perceptual judgments emanates from a shared ensemble of cortical neurons.
影响因子：
2.5
作者：
CELEBRINI, S;NEWSOME, WT
通讯作者：
NEWSOME, WT
影响因子：
2.5
作者：
MAUNSELL, JHR;VANESSEN, DC
通讯作者：
VANESSEN, DC
影响因子：
3.7
作者：
Rudolph, K;Pasternak, T
通讯作者：
Pasternak, T