Mesh : Animals Neurons / physiology Memory, Short-Term / physiology Primary Visual Cortex / physiology Visual Perception / physiology Photic Stimulation Macaca mulatta Visual Cortex / physiology

来  源:   DOI:10.1126/sciadv.adk3953   PDF(Pubmed)

Abstract:
The human ability to perceive vivid memories as if they \"float\" before our eyes, even in the absence of actual visual stimuli, captivates the imagination. To determine the neural substrates underlying visual memories, we investigated the neuronal representation of working memory content in the primary visual cortex of monkeys. Our study revealed that neurons exhibit unique responses to different memory contents, using firing patterns distinct from those observed during the perception of external visual stimuli. Moreover, this neuronal representation evolves with alterations in the recalled content and extends beyond the retinotopic areas typically reserved for processing external visual input. These discoveries shed light on the visual encoding of memories and indicate avenues for understanding the remarkable power of the mind\'s eye.
摘要:
人类感知生动记忆的能力,就好像它们“漂浮”在我们眼前,即使没有实际的视觉刺激,吸引想象力。为了确定视觉记忆背后的神经底物,我们研究了猴子初级视觉皮层中工作记忆内容的神经元表示。我们的研究表明,神经元对不同的记忆内容表现出独特的反应,使用不同于感知外部视觉刺激期间观察到的放电模式。此外,这种神经元表示随着召回内容的改变而演变,并延伸到通常为处理外部视觉输入而保留的视网膜局部区域之外。这些发现揭示了记忆的视觉编码,并为理解心灵的眼睛的非凡力量指明了途径。
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