Mental rotation ability and spontaneous brain activity: a magnetoencephalography study

Area of Science:

• Neuroscience
• Cognitive Psychology
• Neuroimaging

Background:

• Understanding the neural underpinnings of visuospatial abilities is crucial for cognitive science.
• Previous research suggests a link between brain activity and visuospatial task performance, but specific neural correlates require further elucidation.

Purpose of the Study:

• To investigate the relationship between three-dimensional (3D) visuospatial abilities and brain activity during visual thinking.
• To identify distinct magnetoencephalography (MEG) patterns associated with varying levels of performance in mental rotation tasks.

Main Methods:

• Magnetoencephalography (MEG) was employed to record brain activity.
• Participants were categorized into a good performance group (Group G) and a bad performance group (Group B) based on mental rotation task accuracy.
• Analysis focused on lower gamma band (20-35 Hz) activity in specific brain regions during visuospatial tasks and spontaneous imagery.

Main Results:

• Group G exhibited significantly higher 25-35 Hz lower gamma band activity in the superior parietal lobule/intraparietal sulcus and occipitotemporal regions during mental rotation tasks compared to Group B.
• In spontaneous mental imagery tasks, Group G showed significantly higher 20 Hz band activity in the left premotor cortex and 35 Hz band activity in the supplementary motor area than Group B.

Conclusions:

• Specific patterns of lower gamma band activity in parietal, occipitotemporal, and motor regions are associated with superior 3D visuospatial abilities.
• These findings provide novel insights into the neural basis of visuospatial processing and mental imagery, differentiating high and low performers.