Repository logo
 

Residual effects of cannabis on attention toward and awareness of emotional facial expressions: event-related potential studies

Simple item page
dc.contributor.authorTorrence, Robert D., author
dc.contributor.authorRojas, Donald C., advisor
dc.contributor.authorTroup, Lucy J., advisor
dc.contributor.authorNerger, Janice, committee member
dc.contributor.authorBurzynska, Agnieszka, committee member
dc.date.accessioned2019-01-07T17:19:06Z
dc.date.available2020-01-03T17:19:23Z
dc.date.issued2018
dc.description.abstractCannabis use has increased since legalization in various states within the United States of America. Although much of the research on the neurological and psychological effects of cannabis has been on non-human animals, the current research suggests that it can have anxiolytic effects but also decrease some cognitive functioning (e.g. memory, emotional processing, etc.). Individuals with high anxiety has been suggested to have increased attentional bias towards threat-related stimuli. The purpose of the current two studies was to examine the residual effects cannabis has on attentional bias towards and awareness of emotional facial expressions. Both experiments used event-related potential (ERP) to measure brain activity related to attentional processing. Experiment 1 used a dot-probe task with fearful and neutral facial expression to examine attentional bias. The second experiment used a backward masking paradigm to restrict awareness of facial expressions (i.e. fearful, happy, and neutral). The results indicated that cannabis use was associated with differences in attentional processing. Specifically, experiment 1 suggested cannabis users had reduced attentional bias towards fearful facial expressions as compared to non-users. The results from experiment 2 suggested an opposite effect, cannabis users had increased processing of emotional facial expressions. An explanation of the difference in results is the cannabis users in experiment 1 used less frequently than users in experiment 2. The results of both studies suggested cannabis use has an inverse relationship with anxiety related attentional processing of emotional expressions.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.identifierTorrence_colostate_0053A_15116.pdf
dc.identifier.urihttps://hdl.handle.net/10217/193094
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectattentional bias
dc.subjectERP
dc.subjectanxiety
dc.subjectfaces
dc.subjectcannabis
dc.titleResidual effects of cannabis on attention toward and awareness of emotional facial expressions: event-related potential studies
dc.typeText
dcterms.embargo.expires2020-01-03
dcterms.embargo.terms2020-01-03
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplinePsychology
thesis.degree.grantorColorado State University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy (Ph.D.)

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Torrence_colostate_0053A_15116.pdf
Size:
784.64 KB
Format:
Adobe Portable Document Format
Download

Collections

2000-2019
Theses and Dissertations