000002743 001__ 2743 000002743 005__ 20251202145620.0 000002743 0247_ $$2DOI$$a10.6083/M4RV0MD3 000002743 037__ $$aETD 000002743 245__ $$aCross-sector collaboration to increase active transportation: a grounded theory from the health sector perspective 000002743 269__ $$a2014 000002743 336__ $$aDissertation 000002743 502__ $$bPh.D. 000002743 502__ $$gBehavioral & Systems Neuroscience 000002743 520__ $$aExtinction is a complex period of learning during which a predicted relationship between stimuli (i.e. conditioned stimulus-unconditioned stimulus association) is inhibited by presentation of the predictive stimulus alone (i.e. non- reinforced conditioned stimulus), and this learning can be impaired by blockade of dopamine receptor activity. Thus, examining the relationship between dopamine and extinction may be beneficial to understanding basic features of learning and memory. Furthermore, enhancing extinction may be beneficial at a clinical level, as impaired extinction is hypothesized to contribute to a number of diseases of learning and memory, such as posttraumatic stress disorder and substance use disorders. The overarching goal of this dissertation is to examine the consequence of altering dopamine signaling during acquisition and extinction of fear and reward to specify the contribution of dopamine signaling within these particular phases of learning. 000002743 540__ $$fCC BY 000002743 542__ $$fIn copyright - single owner 000002743 650__ $$aEnvironment$$018486 000002743 650__ $$aCooperative Behavior$$017085 000002743 650__ $$aTransportation$$027284 000002743 650__ $$aEnvironmental Policy$$039332 000002743 650__ $$aHealth Personnel$$019889 000002743 650__ $$aMotor Activity$$022451 000002743 650__ $$aReward$$025422 000002743 650__ $$aFear$$018921 000002743 650__ $$aSubstance-Related Disorders$$032029 000002743 650__ $$aDopamine$$018026 000002743 650__ $$aReceptors, Dopamine$$025190 000002743 650__ $$aStress Disorders, Post-Traumatic$$026468 000002743 691__ $$aSchool of Nursing$$041370 000002743 692__ $$aDepartment of Behavioral Neuroscience$$041394 000002743 7001_ $$aAkeroyd, Jennifer$$uOregon Health and Science University$$041354 000002743 7201_ $$aLattal, Matthew$$uOregon Health and Science University$$041354$$7Personal$$eAdvisor 000002743 8564_ $$9a35e9add-dd1b-4482-ac71-8cfc77f551c1$$s3567431$$uhttps://digitalcollections.ohsu.edu/record/2743/files/3517_etd.pdf$$ePublic$$28976b1a43e33b64e37ca03810dbbf06f$$31 000002743 905__ $$a/rest/prod/2b/88/qc/42/2b88qc423 000002743 909CO $$ooai:digitalcollections.ohsu.edu:2743$$pstudent-work 000002743 980__ $$aTheses and Dissertations