Self-reported social functioning and prefrontal hemodynamic responses during a cognitive task in schizophrenia

Area of Science:

• Neuroscience
• Psychiatry
• Medical Imaging

Background:

• Impaired social functioning is a core symptom of schizophrenia, significantly impacting patient quality of life.
• Understanding the neural underpinnings of social deficits is crucial for developing targeted interventions.

Purpose of the Study:

• To investigate prefrontal hemodynamic responses during a cognitive task in schizophrenia patients.
• To determine the relationship between prefrontal activation, cognitive function, and social functioning in schizophrenia.

Main Methods:

• Utilized 52-channel near-infrared spectroscopy (NIRS) to measure prefrontal and superior temporal cortical activity during a verbal fluency task (VFT).
• Compared hemodynamic responses between 33 schizophrenia patients and 30 healthy controls.
• Assessed social functioning using the Social Functioning Scale (SFS).

Main Results:

• Schizophrenia patients exhibited significantly smaller prefrontal and temporal hemodynamic responses compared to controls.
• Prefrontal hemodynamic responses during the VFT strongly correlated with total Social Functioning Scale scores.
• Findings indicate a direct association between prefrontal activation and self-reported social functioning in schizophrenia.

Conclusions:

• Reduced prefrontal activation during cognitive tasks is associated with impaired social functioning in schizophrenia.
• Near-infrared spectroscopy (NIRS) shows promise as a tool for elucidating the neural basis of social deficits in schizophrenia.
• These findings highlight the importance of prefrontal function in social cognition and overall well-being for individuals with schizophrenia.