Anger Experience and Anger Expression Through Drawing in Schizophrenia: An fNIRS Study

Area of Science:

• Neuroscience
• Psychology
• Psychiatry

Background:

• Emotion expression and experience in schizophrenia are critical research areas.
• Art-making offers a unique avenue for studying emotion expression.
• Previous research has limited empirical studies on schizophrenia, art, and emotion expression.

Purpose of the Study:

• To investigate brain mechanisms underlying anger expression in schizophrenia patients versus healthy controls.
• To compare anger experience and expression using art-making (pictographic techniques).
• To explore differences in frontal cortex activity during anger processing.

Main Methods:

• Utilized functional near-infrared spectroscopy (fNIRS) to measure frontal cortex activity.
• Employed pictographic psychological techniques for emotion expression.
• Compared schizophrenia patients and healthy participants.

Main Results:

• No significant differences in anger experience were found between groups.
• Schizophrenia patients showed significant negative activation in the dorsolateral prefrontal cortex and frontal pole during anger expression.
• Distinct differences in drawing features, content, and description ability were observed in schizophrenia patients, with larger effect sizes for these aspects.

Conclusions:

• While anger experience is similar, anger expression mechanisms differ in schizophrenia.
• Frontal cortex activation patterns during art-based anger expression are distinct in schizophrenia.
• Art-making reveals significant differences in emotional expression and its neural correlates in schizophrenia.