MedTrace Logo

Transcranial Magnetic Stimulation of the Prefrontal Cortex: Effects on Risky Decision Making and Temporal Discounting.

NCT01098864 · Status: WITHDRAWN · Phase: NA · Type: INTERVENTIONAL

Last updated 2015-03-04

No results posted yet for this study

Summary

The main objective of this study is to examine the effects of magnetic stimulation on the prefrontal cortex. We plan to use low frequency, repeated transcranial magnetic stimulation (1 Hz rTMS) to temporarily inhibit activity in the prefrontal cortex and measure the resulting effect on two decision-making tasks. The prefrontal cortex is thought to mediate or control cognitive functions like decision-making, planning, memory, and inhibit impulsive behavior.Previous research has indicated that rTMS over the right dorsal lateral prefrontal cortex will lead to preferences for riskier alternatives. Our hypothesis is that rTMS over the right DLPFC will lead to greater preference for the riskier alternative and greater temporal discounting.

Conditions

  • Decision Making

Interventions

DEVICE

transcranial magnetic stimulation

low frequency (1 Hz) repeated transcranial magnetic stimulation will be delivered to the dorsal lateral prefrontal cortex (DLPFC) area for a period of 15 minutes to test for effect on executive function (e.g., decision choice and subjective value). Four sessions will be conducted per subject; 2 active stimulations,(1 left DLPFC, 1 right DLPFC) and 2 sham stimulations (1 left DLPFC, 1 right DLPFC) with a minimum of 48 hours between every stimulation. Pre and post stimulations measures of cognitive and executive function will be collected and analyzed for significant differences.

Sponsors & Collaborators

  • University of Arkansas

    lead OTHER

Principal Investigators

  • Mark S Mennemeier, PhD · Universtiy of Arkansas for Medical Sciences

Study Design

Allocation
NA
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2011-05-31
Primary Completion
2014-01-31
Completion
2014-01-31

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01098864 on ClinicalTrials.gov