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NCT02043561

The Effect of Inhibitory Control Processes Induced by Rectal Distension on Impulse Control Measured by Stroop Task Performance and Intertemporal Discounting.

Completed NA Last updated 11 September 2017
What this trial tests

NA trial testing induction of urge by rectal distension in Healthy Subjects in 35 participants. Completed in 7 September 2015.

Timeline
24 December 2014
Primary endpoint
7 September 2015
7 September 2015

Quick facts

Lead sponsorUniversitaire Ziekenhuizen KU Leuven
PhaseNA
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designcrossover
Maskingsingle
Primary purposeother
Enrollment35
Start date24 December 2014
Primary completion7 September 2015
Estimated completion7 September 2015
Sites1 location across Belgium

Drugs / interventions tested

Conditions studied

Sponsor

Universitaire Ziekenhuizen KU Leuven — full company profile →

Who can join

Adults 18 to 60, any sex, with Healthy Subjects. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The aim of this study will be to investigate the effect of rectal distension, controlled by electronic barostat, on cognitive control ability in healthy subjects. We will use the Stroop task and an intertemporal choice task as standard instruments. Like bladder control and rectal control, both Stroop task performance and intertemporal choices - though very different tasks at the surface - are dependent on the conflict monitoring function of the anterior cingulate cortex. The Stroop task requires the naming of the print color of a series of visually presented color words, and reaction time and error rates are typically used as performance indicators. When word color and word meaning do not match, performance of the task (color naming) requires the inhibition of a (near) automatic response (word reading). The intertemporal choice task consists of a series of choices between a sooner smaller monetary reward and a larger but later reward. The choices are constructed such that they allow the estimation of a discount parameter, which is an index for the level of impulsiveness manifested by the participant at the time the choices are made. The hypothesis is that the inhibition induced by the urge generated during rectal distension will improve cognitive inhibitory performance, as has previously been shown for bladder filling.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Data sources for this page

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