{"id":{"repo_id":"brock","oai_identifier":"oai:brocku.scholaris.ca:10464/5404"},"canonical_url":"https://search.dev.ndltd.org/etd/brock/oai:brocku.scholaris.ca:10464/5404","repository":{"repo_id":"brock","name":"Brock University","base_url":"https://brocku.scholaris.ca/server/oai/request"},"display":{"title":"Task-Dependent Oscillatory Brain Activity During Oculomotor Delayed Response Task","abstract":"This study used three Oculomotor Delayed Response (ODR) tasks to investigate the unique cognitive demands during the delay period. Changes in alpha power were used to index cognitive efforts during the delay period. Continuous EEGs from 25 healthy young adults (18-34 years) were recorded using dense electrode array. The data was analyzed by 6-cycle Morlet wavelet decompositions in the frequency range of 2-30 Hz to create time- frequency decompositions for four midline electrode sites. The 99% confidence intervals using the bootstrapped 20% trimmed mean of the 10 Hz frequency were used to examine the differences among conditions. Compared to two Memory conditions (Match and Non-Match), Control condition yielded significant differences in all frequencies over the entire trial period, suggesting a cognitive state difference. Compared to Match condition, the Non–Match condition had lower alpha activity during the delay period at each midline electrode site reflecting the higher cognitive effort required.","abstract_html":"This study used three Oculomotor Delayed Response (ODR) tasks to investigate the unique cognitive demands during the delay period. Changes in alpha power were used to index cognitive efforts during the delay period. Continuous EEGs from 25 healthy young adults (18-34 years) were recorded using dense electrode array. The data was analyzed by 6-cycle Morlet wavelet decompositions in the frequency range of 2-30 Hz to create time- frequency decompositions for four midline electrode sites. The 99% confidence intervals using the bootstrapped 20% trimmed mean of the 10 Hz frequency were used to examine the differences among conditions. Compared to two Memory conditions (Match and Non-Match), Control condition yielded significant differences in all frequencies over the entire trial period, suggesting a cognitive state difference. Compared to Match condition, the Non–Match condition had lower alpha activity during the delay period at each midline electrode site reflecting the higher cognitive effort required.","abstract_has_math":false,"creators":["Nichol, Melissa"],"institution":"Brock University","degree_name":"M.A. Child and Youth Studies","degree_level":"Masters","degree_discipline":"Faculty of Social Sciences","degree_department":"Department of Child and Youth Studies","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-05-01","date_published":"2014-05-01","updated_at":"2026-07-24T01:22:54Z","subjects":["Electrophysiology","Oculomotor delayed response task","Oscillations","Alpha frequency","Working memory"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10464/5404","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Department of Child and Youth Studies"]},{"key":"dc:creator","label":"Author","values":["Nichol, Melissa"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-05-01T19:08:05Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-05-01T19:08:05Z"]},{"key":"dc:date.issued","label":"Date","values":["2014-05-01"]},{"key":"dc:type","label":"Dc Type","values":["Electronic Thesis or Dissertation"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Faculty of Social Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.A. Child and Youth Studies"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Brock University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Electrophysiology","Oculomotor delayed response task","Oscillations","Alpha frequency","Working memory"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10464/5404"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This study used three Oculomotor Delayed Response (ODR) tasks to investigate the unique cognitive demands during the delay period. Changes in alpha power were used to index cognitive efforts during the delay period. Continuous EEGs from 25 healthy young adults (18-34 years) were recorded using dense electrode array. The data was analyzed by 6-cycle Morlet wavelet decompositions in the frequency range of 2-30 Hz to create time- frequency decompositions for four midline electrode sites. The 99% confidence intervals using the bootstrapped 20% trimmed mean of the 10 Hz frequency were used to examine the differences among conditions. Compared to two Memory conditions (Match and Non-Match), Control condition yielded significant differences in all frequencies over the entire trial period, suggesting a cognitive state difference. Compared to Match condition, the Non–Match condition had lower alpha activity during the delay period at each midline electrode site reflecting the higher cognitive effort required."]},{"key":"dc:title","label":"Title","values":["Task-Dependent Oscillatory Brain Activity During Oculomotor Delayed Response Task"]}]}],"canonical_facts":{"dc:contributor.department":["Department of Child and Youth Studies"],"dc:creator":["Nichol, Melissa"],"dc:date.accessioned":["2014-05-01T19:08:05Z"],"dc:date.available":["2014-05-01T19:08:05Z"],"dc:date.issued":["2014-05-01"],"dc:description.abstract":["This study used three Oculomotor Delayed Response (ODR) tasks to investigate the unique cognitive demands during the delay period. Changes in alpha power were used to index cognitive efforts during the delay period. Continuous EEGs from 25 healthy young adults (18-34 years) were recorded using dense electrode array. The data was analyzed by 6-cycle Morlet wavelet decompositions in the frequency range of 2-30 Hz to create time- frequency decompositions for four midline electrode sites. The 99% confidence intervals using the bootstrapped 20% trimmed mean of the 10 Hz frequency were used to examine the differences among conditions. Compared to two Memory conditions (Match and Non-Match), Control condition yielded significant differences in all frequencies over the entire trial period, suggesting a cognitive state difference. Compared to Match condition, the Non–Match condition had lower alpha activity during the delay period at each midline electrode site reflecting the higher cognitive effort required."],"dc:identifier.uri":["http://hdl.handle.net/10464/5404"],"dc:language.iso":["eng"],"dc:subject":["Electrophysiology","Oculomotor delayed response task","Oscillations","Alpha frequency","Working memory"],"dc:title":["Task-Dependent Oscillatory Brain Activity During Oculomotor Delayed Response Task"],"dc:type":["Electronic Thesis or Dissertation"],"thesis:degree_discipline":["Faculty of Social Sciences"],"thesis:degree_level":["Masters"],"thesis:degree_name":["M.A. Child and Youth Studies"],"thesis:institution_name":["Brock University"]},"updated_at":"2026-07-24T01:22:54Z"}