Resting electroencephalography correlates of pseudoneglect: an individual differences approach

Area of Science:

• Neuroscience
• Cognitive Psychology

Background:

• Pseudoneglect describes a leftward attentional bias in neurologically intact individuals.
• Previous research explored active task correlates of pseudoneglect.
• The resting brain activity associated with pseudoneglect remains underexplored.

Purpose of the Study:

• To investigate the resting electroencephalography (EEG) correlates of pseudoneglect.
• To determine if resting brain activation patterns predict attentional bias in spatial perception.
• To identify individual differences in resting EEG associated with pseudoneglect.

Main Methods:

• Resting EEG was recorded from 21 college students.
• Participants completed a computerized line perception task to assess pseudoneglect.
• EEG asymmetry in theta, alpha, beta, and gamma bands was analyzed and regressed against pseudoneglect scores.

Main Results:

• Significant associations were found between pseudoneglect and EEG asymmetry in the gamma, theta, and beta bands at the F3/4 (midfrontal) location.
• Greater tonic right midfrontal activation was linked to a stronger leftward attentional bias (pseudoneglect).

Conclusions:

• Resting right midfrontal activation across multiple EEG frequency bands is associated with pseudoneglect.
• This finding provides a novel individual differences corollary to existing active task observations in pseudoneglect research.
• Resting EEG may serve as a biomarker for spatial attentional biases.