Université de Toulouse, UPS, Centre de Recherche Cerveau et Cognition, 31052, Toulouse, France.
CerCo, CNRS UMR 5549, 31052, Toulouse, France.
Sci Rep. 2018 Oct 26;8(1):15889. doi: 10.1038/s41598-018-34252-7.
Recent research indicates that attentional stimulus selection could be a rhythmic process. In monkey, neurons in V4 and IT exhibit rhythmic spiking activity in the theta range in response to a stimulus. When two stimuli are presented together, the rhythmic neuronal responses to each occur in anti-phase, a result indicative of competitive interactions. In addition, it was recently demonstrated that these alternating oscillations in monkey V4 modulate the speed of saccadic responses to a target flashed on one of the two competing stimuli. Here, we replicate a similar behavioral task in humans (7 participants, each performed 4000 trials) and report a pattern of results consistent with the monkey findings: saccadic response times fluctuate in the theta range (6 Hz), with opposite phase for targets flashed on distinct competing stimuli.
最近的研究表明，注意力刺激选择可能是一个有节奏的过程。在猴子中，V4 和 IT 中的神经元在响应刺激时会在 theta 范围内表现出有节奏的尖峰活动。当两个刺激同时呈现时，每个刺激的有节奏的神经元反应会反相发生，这表明存在竞争相互作用。此外，最近的研究表明，猴子 V4 中的这些交替振荡会调节对两个竞争刺激之一上闪烁的目标的扫视反应速度。在这里，我们在人类中复制了一个类似的行为任务（7 名参与者，每人完成 4000 次试验），并报告了与猴子研究结果一致的结果模式：扫视反应时间在 theta 范围内（6 Hz）波动，对于在不同竞争刺激上闪烁的目标，相位相反。
