Two forms of spatial imagery: neuroimaging evidence

Area of Science:

• Cognitive Neuroscience
• Neuroimaging
• Spatial Cognition

Background:

• Spatial imagery is crucial for various tasks, including graph interpretation, geometry, and surgery.
• Previous understanding suggested spatial imagery might be a singular cognitive function.

Purpose of the Study:

• To investigate whether spatial imagery is a unified faculty or comprises distinct components.
• To identify separate neural networks supporting the visualization of spatial location versus mental transformation of spatial information.

Main Methods:

• Functional magnetic resonance imaging (fMRI) at 3-Tesla was employed.
• Sixteen participants (8 male, 8 female) performed two distinct spatial imagery tasks using identical stimuli.
• Tasks included: 1) visualizing spatial location, and 2) mentally rotating stimuli.

Main Results:

• The location-based task showed increased activation in the occipito-parietal sulcus, medial posterior cingulate, and precuneus.
• The mental transformation task revealed greater activation in the superior parietal lobe and postcentral gyrus.
• Distinct patterns of brain activation were observed for the two types of spatial imagery.

Conclusions:

• Spatial imagery is not a single cognitive faculty but comprises at least two distinct types.
• Visualizing spatial location and mentally transforming spatial information rely on separate neural networks.
• These findings contribute to a more nuanced understanding of spatial cognition and its neural underpinnings.