Examining decision-making using transcranial direct current stimulatio

Not Applicable

Withdrawn

• Conditions: Decision-making processes in healthy volunteers; Mental Health - Studies of normal psychology, cognitive function and behaviour

• Registration Number: ACTRN12613000488707
• Lead Sponsor: Professor Paul Fitzgerald

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2013-05-01
• Last Update Posted: 27 June 2022

Recruitment & Eligibility

• Status: Withdrawn
• Sex: All
• Target Recruitment: 24

Inclusion Criteria

No history of neurological or psychiatric illness;
Not taking any psychoactive medications;
Able to provide informed consent

Exclusion Criteria

Presence of metal anywhere in the head (except the mouth);
Have had a prior serious head injury, neurological condition, or other serious medical condition;
Are pregnant.

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Difference in the proportion of risky gamble choices made on a gambling task between active tDCS and sham tDCS<br><br>The gambling task is a simplified version of slot-machines or pokies. On each trial participants will be given a number of betting options and asked to place a bet. Larger bets associated with larger wins.<br><br>Risky gambling choices is defined as the proportion of trials in which participants decide the place the larger bet over the smaller bet.[Session 1 and Session 2 (Session 2 will occur at least 3 days after Session 1)<br><br>Task performance will be assessed during each session immediately following tDCS treatment.];Difference in the proportion of unfair offers accepted (in Ultimatum Game experimental task) between active tDCS and sham tDCS[Session 1 and Session 2 (Session 2 will occur at least 3 days after Session 1)<br><br>Task performance will be assessed during each session during tDCS treatment.]

Secondary Outcome Measures

Name	Time	Method
Anhedonia score (as measured by Principal Components Analysis score of Chapman Physical Anhedonia Scale, Chapman Social Anhedonia Scale, Snaith-Hamilton Pleasure Scale, Temporal Experience of Pleasure Scale, Carver and White BIS/BAS scale)[Session 2<br><br>Outcome will be assessed prior to treatment session]