Disrupted thalamic resting-state functional networks in schizophrenia

Area of Science:

• Neuroscience
• Psychiatry
• Brain Imaging

Background:

• The thalamus is crucial for information processing and extensively connected to other brain regions.
• Thalamic abnormalities are implicated in schizophrenia, but its resting-state functional networks remain poorly understood.

Purpose of the Study:

• To characterize the resting-state networks (RSNs) of the thalamus in individuals with schizophrenia.
• To investigate thalamic connectivity patterns in schizophrenia compared to healthy controls.

Main Methods:

• Utilized seed-based whole-brain correlation analysis.
• Examined thalamic RSNs in 72 patients with schizophrenia and 73 healthy controls.

Main Results:

• Schizophrenia patients displayed enhanced thalamic connectivity with the precentral gyrus, dorsal medial frontal gyrus, middle occipital gyrus, and lingual gyrus.
• Reduced thalamic connectivity was observed in the superior frontal gyrus, anterior cingulate cortex, inferior parietal lobe, and cerebellum in patients.

Conclusions:

• Findings suggest an over-connected thalamic network in schizophrenia, challenging the "disconnectivity model".
• The thalamus is highlighted as a critical hub in the network abnormalities associated with schizophrenia.