Masters of Arts Defense - College of Arts and Sciences - Department of Psychology
When: Thursday,
April 21, 2016
12:30 PM
-
2:00 PM
Where: > See description for location
Description: COLLEGE OF ARTS AND SCIENCES - DEPARTMENT OF PSYCHOLOGY
Master of Arts Thesis Defense by Luke Pezanko
TOPIC: Time Perception and Emotion: An Event-Related Potential Investigation
PRESENTOR: Luke Pezanko
ADVISOR: Dr. Aminda O'Hare
DATE & TIME: April 21, 2016 at 12:30 PM
LOCATION: LARTS 374
ABSTRACT
Prior research posits that negative stimuli can induce alterations in one’s perception of time. Interestingly, when the type of negative emotion was controlled for, only disgust images were found to correspond to over-reproductions of time, while fear images were found to correspond to under-reproductions of time. Externally- versus internally-focused attention may account for these different effects, however, a better understanding of the effects of different types of negative emotion on time perception is needed. The contingent negative variance (CNV), an event-related potential (ERP), has been found to fluctuate with over- and under-reproductions of time. In the current study, participants (n = 36) completed a time reproduction task that presented high and low arousing angry, disgust, and fear faces, as well as neutral faces at different durations. High-density, 64-channel EEG was recorded during the task to test CNV effects. A significant main effect for emotion was found such that fearful faces elicited larger CNV amplitudes compared to angry and disgust faces (p<.05). A significant main effect of presentation duration was found, such that shorter (400ms) intervals elicited larger CNV amplitudes than 600ms and 800ms intervals (p’s<.05). These data support previous research that has found different negative emotions to have different effects on time perception; however, the direction of the effect conflicts previous findings. Possible theoretical accounts for these findings will be discussed.
Master of Arts Thesis Defense by Luke Pezanko
TOPIC: Time Perception and Emotion: An Event-Related Potential Investigation
PRESENTOR: Luke Pezanko
ADVISOR: Dr. Aminda O'Hare
DATE & TIME: April 21, 2016 at 12:30 PM
LOCATION: LARTS 374
ABSTRACT
Prior research posits that negative stimuli can induce alterations in one’s perception of time. Interestingly, when the type of negative emotion was controlled for, only disgust images were found to correspond to over-reproductions of time, while fear images were found to correspond to under-reproductions of time. Externally- versus internally-focused attention may account for these different effects, however, a better understanding of the effects of different types of negative emotion on time perception is needed. The contingent negative variance (CNV), an event-related potential (ERP), has been found to fluctuate with over- and under-reproductions of time. In the current study, participants (n = 36) completed a time reproduction task that presented high and low arousing angry, disgust, and fear faces, as well as neutral faces at different durations. High-density, 64-channel EEG was recorded during the task to test CNV effects. A significant main effect for emotion was found such that fearful faces elicited larger CNV amplitudes compared to angry and disgust faces (p<.05). A significant main effect of presentation duration was found, such that shorter (400ms) intervals elicited larger CNV amplitudes than 600ms and 800ms intervals (p’s<.05). These data support previous research that has found different negative emotions to have different effects on time perception; however, the direction of the effect conflicts previous findings. Possible theoretical accounts for these findings will be discussed.
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