タイトル |
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Correlation between Pupil Size and Subjective Passage of Time in Non-Human Primates
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作成者 |
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アクセス権 |
open access |
権利情報 |
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主題 |
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Other
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eye movements
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Other
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monkeys
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Other
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pupil diameter
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Other
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self-timing
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Other
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temporal processing
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NDC
490
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内容注記 |
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Abstract
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Our daily experience of time is strongly influenced by internal states, such as arousal, attention, and mood. However, the underlying neuronal mechanism remains largely unknown. To investigate this, we recorded pupil diameter, which is closely linked to internal factors and neuromodulatory signaling, in monkeys performing the oculomotor version of the time production paradigm. In the self-timed saccade task, animals were required to make a memory-guided saccade during a predetermined time interval following a visual cue. We found that pupil diameter was negatively correlated with trial-by-trial latency of self-timed saccades. Because no significant correlation was found for visually guided saccades, correlation of self-timed saccades could not be explained solely by the facilitation of saccade execution. As the reward amount was manipulated, pupil diameter and saccade latency altered in opposite directions and the magnitudes of modulation correlated strongly across sessions, further supporting the close link between pupil diameter and the subjective passage of time. When the animals were trained to produce two different intervals depending on the instruction, the pupil size again correlated with the trial-by-trial variation of saccade latency in each condition; however, pupil diameter differed significantly for saccades with similar latencies generated under different conditions. Our results indicate that internal brain states indexed by pupil diameter, which parallel noradrenergic neuronal activity (Aston-Jones and Cohen, 2005), may bias trial-by-trial variation in the subjective passage of time.
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出版者 |
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Society for Neuroscience
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日付 |
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言語 |
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資源タイプ |
journal article |
出版タイプ |
VoR |
資源識別子 |
HDL
http://hdl.handle.net/2115/65200
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関連 |
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isIdenticalTo
DOI
https://doi.org/10.1523/JNEUROSCI.2533-16.2016
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PMID
27807173
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収録誌情報 |
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Journal of neuroscience
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巻36
号44
開始ページ11331
終了ページ11337
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ファイル |
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コンテンツ更新日時 |
2023-07-26 |