Faculty Information |
|
Article types | Original article |
Language | English |
Refereed paper | Refereed |
Title | Respiratory fluctuations in pupil diameter are not maintained during cognitive tasks. |
Journal | Formal name:Respiratory physiology&neurobiology Abbreviation:Respir Physiol Neurobiol ISSN code:1878151915699048 |
Domestic / Foregin | Foregin |
Volume, Number, Page | 265,pp.68-75 |
Papers・Author | Nakamura Nozomu H, Fukunaga Masaki, Oku Yoshitaka |
Publication date | 2019/07 |
Papers・Description | Pupil diameter fluctuation throughout the respiratory cycle is autonomically controlled in the resting state, as pupils dilate during inspiration and constrict during expiration. To determine whether respiratory-dependent fluctuations in pupil size are maintained during a cognitive task, we employed healthy human subjects performing a delayed matching-to-sample task with a short delay and measured their pupil sizes and R wave-to-R wave intervals (RRIs). During the discrimination stage, the cognitive state with the higher task engagement yielded more pupil dilation. However, respiratory fluctuations in pupil size were abolished, whereas those in the RRI were still discernible during the discrimination stage. Our results suggest that an alternative control mechanism involving the cognitive state associated with task engagement overrides the respiratory-related autonomic control of pupil diameter. |
DOI | 10.1016/j.resp.2018.07.005 |
PMID | 30021125 |