Utilizing Mutual Information Analysis to Explore the Relationship Between Gray and White Matter Structural...

Area of Science:

• Neuroscience
• Neuroimaging
• Developmental Psychology

Background:

• Schizophrenia is viewed as a neurodevelopmental disorder with widespread brain abnormalities.
• The relationship between gray and white matter pathologies in schizophrenia remains poorly understood.

Purpose of the Study:

• To investigate the morphological relationship and interdependence between gray and white matter in schizophrenia.
• To explore if gray and white matter abnormalities are related or independent in schizophrenia.

Main Methods:

• Utilized mutual information (MI) to assess morphological dependence between gray and white matter.
• Analyzed three corpus callosum segments and connected gray matter regions (rMFG, STG, LOG).
• Compared 45 schizophrenia participants with 49 healthy controls.

Main Results:

• Significantly reduced MI between white matter tract dispersion and cortical thickness/area in the right superior temporal gyrus (STG) in schizophrenia patients.
• No group differences observed in individual measures of cortical thickness, surface area, or white matter dispersion.
• Demonstrated reduced morphological dependence between specific gray and white matter regions.

Conclusions:

• Reduced morphological dependence suggests a potential decoupling of developmental processes shaping gray and white matter.
• Highlights the importance of analyzing the interplay between gray and white matter, not just independently.
• Findings contribute to understanding the neurodevelopmental basis of schizophrenia.