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Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra

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Published on: September 8, 2021

The thalamic reticular nucleus and schizophrenia.

Fabio Ferrarelli¹, Giulio Tononi

¹Department of Psychiatry, School of Medicine and Public Health, University of Wisconsin at Madison, Madison, WI 53719, USA.

Schizophrenia Bulletin

|December 7, 2010

Summary

The thalamic reticular nucleus (TRN) plays a role in attention and sensory gating. Dysfunction in these TRN-thalamus circuits may contribute to schizophrenia neurobiology.

Area of Science:

Neuroscience
Neurobiology of Schizophrenia

Background:

The thalamic reticular nucleus (TRN) is a GABAergic nucleus situated between the thalamus and cortex.
It receives input from both cortical and thalamic neurons and projects inhibitory signals to the dorsal thalamus.

Purpose of the Study:

To review evidence linking the TRN to the neurobiology of schizophrenia.
To explore the TRN's role in cognitive functions relevant to schizophrenia.

Main Methods:

Literature review of existing evidence.
Analysis of TRN's anatomical and functional properties.

Main Results:

TRN-thalamus circuits are crucial for both bottom-up (sensory gating, sleep spindles) and top-down (attentional modulation) processing.

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Schizophrenia patients exhibit deficits in attention and sensory gating.

Reduced sleep spindles are observed in individuals with schizophrenia.

Conclusions:

The TRN's molecular and anatomo-functional characteristics suggest its involvement in the neurobiology of schizophrenia.
Dysregulation of TRN-thalamus circuits may underlie cognitive deficits in schizophrenia.