Open Access. Powered by Scholars. Published by Universities.®

Psychiatry and Psychology Commons

Open Access. Powered by Scholars. Published by Universities.®

2021

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 511 - 512 of 512

Full-Text Articles in Psychiatry and Psychology

Opioid System's Involvement In Ketamine's Antidepressant-Like Effects, Fan Zhang Jan 2021

Opioid System's Involvement In Ketamine's Antidepressant-Like Effects, Fan Zhang

Theses and Dissertations

Depression is one of the most debilitating disorders in the world. The currently available medications typically have a 2-4 week delay in their therapeutic effects and are ineffective for about 40% of patients. In 2000, a subanesthetic dose (0.5 mg/kg i.e.) of the dissociative anesthetic ketamine was reported to have both rapid and robust antidepressant effects in in treatment-resistant depressed patients. However, the mechanisms responsible for ketamine’s antidepressant effects remain unclear. In 2018, a clinical study reported that pretreatment with the nonselective opioid antagonist naltrexone attenuated the rapid antidepressant effect of ketamine in depressed patients. The current study investigated the …


The Effect Of Motivational General-Mastery Imagery On Reaction Time Performance And Heart Rate, William J. Bean Jr. Jan 2021

The Effect Of Motivational General-Mastery Imagery On Reaction Time Performance And Heart Rate, William J. Bean Jr.

College of Graduate Studies: Theses & Dissertations

Research suggests that imagery can reduce reaction time (Alikhani et al., 2001; Grouios, 1992; Hanshaw & Sukal, 2016; Iftikhar et al., 2018; Shanks & Cameron, 2000). Previous studies examining the imagery and reaction time relationship have almost exclusively focused on motor imagery. Additionally, a recent study by McNeil and colleagues (2019) concluded that imagery training improved decision time variables, but not overall reactive agility. Individuals may not be able to generate unpredictable stimuli during imagery. The purpose of this study was to examine the effects of motivational general-mastery (MG-M) imagery on reaction time and heart rate. Reaction time was measured …