Cui, Q., Liu, M., Liu, C. H., Long, Z., Zhao, K. and Fu, X., 2021. Unpredictable fearful stimuli disrupt timing activities: Evidence from event-related potentials. Neuropsychologia, 163 (December), 108057.
Full text available as:
|
PDF
manuscript-814.pdf - Accepted Version Available under License Creative Commons Attribution Non-commercial No Derivatives. 1MB | |
Copyright to original material in this document is with the original owner(s). Access to this content through BURO is granted on condition that you use it only for research, scholarly or other non-commercial purposes. If you wish to use it for any other purposes, you must contact BU via BURO@bournemouth.ac.uk. Any third party copyright material in this document remains the property of its respective owner(s). BU grants no licence for further use of that third party material. |
DOI: 10.1016/j.neuropsychologia.2021.108057
Abstract
The present study investigated the effect of an imminent fearful stimulus on an ongoing temporal task. Participants judged the duration of a blank temporal interval followed by a fearful or a neutral image. Results showed an underestimation of the duration in the fearful condition relative to the neutral condition, but only when the occurrence of the fearful image was difficult to predict. ERPs results for the blank temporal interval found no effect of the fearful stimulus on the contingent negative variation (CNV) amplitude in the clock stage. However, after the image onset, there was a larger P1 for the fearful relative to the neutral condition. Although this effect was indistinguishable regardless of whether the fearful event could be easily predicted, a late positive potential (LPP) component displayed larger amplitude only for unpredictable fearful stimuli. The time-frequency results showed enhanced delta-theta power (0.5-7.5 Hz) for the unpredictable fearful stimuli in the late stage. Importantly, the enhanced delta-theta rhythm correlated negatively with the duration judgments. Together, these results suggest that an unpredictable fearful event might divert more attention away from the counting process in the working memory stage, resulting in missing ticks and temporal underestimation.
Item Type: | Article |
---|---|
ISSN: | 0028-3932 |
Uncontrolled Keywords: | Delta-theta rhythm ; Late positive potential ; Time perception ; Unpredictable fearful stimuli |
Group: | Faculty of Science & Technology |
ID Code: | 36157 |
Deposited By: | Symplectic RT2 |
Deposited On: | 01 Nov 2021 12:04 |
Last Modified: | 12 Oct 2022 01:08 |
Downloads
Downloads per month over past year
Repository Staff Only - |