Target selection for deep brain stimulation in treatment resistant schizophrenia

Area of Science:

• Neuroscience
• Psychiatry
• Neurosurgery

Background:

• Schizophrenia treatment resistance poses a significant clinical challenge.
• Deep brain stimulation (DBS) is an emerging therapeutic option for such cases.
• Optimal electrode placement for DBS in schizophrenia remains an area of active investigation.

Purpose of the Study:

• To review rationales for electrode placement in deep brain stimulation for schizophrenia.
• To evaluate proposed and employed targets based on neurobiological evidence.

Main Methods:

• Review of existing literature on brain abnormalities in schizophrenia.
• Analysis of proposed and utilized DBS targets.
• Consideration of functional imaging evidence for regional brain activity.

Main Results:

• Nucleus accumbens and subgenual anterior cingulate cortex are potential targets due to hypothesized hyperactivity.
• Ventral tegmental area, substantia nigra pars reticulata, and habenula have also been considered.
• Dorsolateral prefrontal cortex and hippocampus are less likely targets based on current evidence.

Conclusions:

• The nucleus accumbens shows the strongest current evidence for DBS electrode placement in schizophrenia.
• Substantia nigra pars reticulata and ventral tegmental area also present as promising targets.
• Further research is needed to optimize DBS targeting for schizophrenia treatment.