Attention Modulation of Local and Global Inhibition Mechanisms

Summary

Human behavior is both flexible and adapted to the environmental context through inhibition capabilities; the investigator control the subject's behavior by repressing inappropriate responses and selecting, among several possibilities, those that are appropriate. These mechanisms are not independent of attentional control. Attention acts as a selection filter for the investigator's behavior. This leads us to hypothesize that attention modulates the mechanisms of inhibition. Nevertheless, the different brain structures involved, as well as mechanisms underlying the interaction between inhibition and attention remain largely unknown.

Previous research has suggested that inhibition requires selective attention and, conversely, attentional mechanisms would result in the "deselection", or inhibition, of objects in space or irrelevant actions. Reconciling the literature on attention with the one on inhibition appears fundamental for the understanding of the instance to which the mechanisms of inhibition and the cognitive processes interact. Therefore, the goal of this research project will be to investigate how inhibition mechanisms are implemented in the brain and, in more detail, what determines the type of resulting inhibitory control: spatially localized or global. The investigator will test 3 different patient groups (optic ataxia, hemispatial neglect and attention-deficit hyperactivity disorder) compared to control.

In conclusion, this research project will aim to develop a theoretical model of the interaction between attentional control and inhibition mechanisms in order to improve diagnostic and rehabilitation tools in the future.

Conditions

• Optical Phenomena

Interventions

BEHAVIORAL

experience 1 "The negative priming task"

The targets are presented to the subject on a computer screen. The subject must make an eye or hand movement toward the target and ignore the distracters.

BEHAVIORAL

experience 2 "Stop signal task"

The targets are presented to the subject on a computer screen. The subject must make an eye movement towards this target. Sometimes a stop signal will appear and the subject will have to avoid to look at the target

BEHAVIORAL

experience 3 "Anti-saccades"

The targets are presented to the subject on a computer screen. The subject must make an eye movement toward this target. Sometimes an instruction will ask the subject to look at the opposite of the target

Sponsors & Collaborators

• Hospices Civils de Lyon

  lead OTHER

Principal Investigators

• Laure PISELLA · Centre de recherche de Neurosciences de Lyon (CRNL)

Study Design

Allocation

NON_RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

8 Years

Max Age

75 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2022-11-26

Primary Completion

2031-11-26

Completion

2031-11-26

Countries

• France

Study Locations