GABA Predicts Time Perception

GABA Predicts Time Perception
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GABA 预测时间感知

DOI:
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发表时间:
2014
影响因子:
5.3
通讯作者:
R. Cohen Kadosh
R. Cohen Kadosh
中科院分区:
医学1区
文献类型:
--
作者:
D. Terhune;Sonia Russo;J. Near;C. Stagg;R. Cohen Kadosh

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我们对时间的感知限制了我们对世界的体验,并对无数的认知和运动功能产生了关键影响。有新的证据表明,亚秒间隔的感知持续时间是由人类和非人类动物的感觉特异性神经活动驱动的,但时间感知的个体差异的机制仍然难以捉摸。我们测试了这一假设,即视觉皮层GABA升高损害特定视觉刺激的编码,导致视觉处理的抑制和伴随的正时间顺序错误(相对低估)在亚秒视觉间隔的感知持续时间。参与者完成了心理物理任务测量视觉间隔歧视和时间再现,我们测量了在体内静息态GABA在视觉皮层使用磁共振波谱。时间顺序错误选择性地与视觉皮层中的GABA浓度相关,GABA升高与心理测量功能的水平位移相关,反映了正的时间顺序错误(相对低估)。这些结果表明,解剖,神经化学和任务的特异性,并表明,视觉皮层GABA有助于时间知觉的个体差异。
Our perception of time constrains our experience of the world and exerts a pivotal influence over a myriad array of cognitive and motor functions. There is emerging evidence that the perceived duration of subsecond intervals is driven by sensory-specific neural activity in human and nonhuman animals, but the mechanisms underlying individual differences in time perception remain elusive. We tested the hypothesis that elevated visual cortex GABA impairs the coding of particular visual stimuli, resulting in a dampening of visual processing and concomitant positive time-order error (relative underestimation) in the perceived duration of subsecond visual intervals. Participants completed psychophysical tasks measuring visual interval discrimination and temporal reproduction and we measured in vivo resting state GABA in visual cortex using magnetic resonance spectroscopy. Time-order error selectively correlated with GABA concentrations in visual cortex, with elevated GABA associated with a rightward horizontal shift in psychometric functions, reflecting a positive time-order error (relative underestimation). These results demonstrate anatomical, neurochemical, and task specificity and suggest that visual cortex GABA contributes to individual differences in time perception.
DOI: 10.1146/annurev-neuro-062111-150444
发表时间: 2012
影响因子: 13.9
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Buzsáki G;Wang XJ
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期刊: NATURE
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发表时间: 2000-12
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影响因子: --
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DOI: 10.1016/j.pnmrs.2011.06.001
发表时间: 2012-01
影响因子: 6.1
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