Hypometabolism in the brain is characterized by a decreased rate of glucose consumption in the brain. Hypometabolism is a symptom present for many mental illnesses and neurodegenerative diseases.

University of Michigan - Ann Arbor

A common structural abnormality observed in individuals with schizophrenia is a reduction of gray matter, which contains the cell bodies of neurons, particularly within the frontal lobes. This finding is significant because the frontal lobes are responsible for complex cognitive functions like planning, attention, and problem-solving. Therefore, the loss of gray matter in this critical area helps to explain the cognitive deficits frequently observed in the disorder.

Gray Matter Reduction in Schizophrenia

Zilberter Y, Zilberter M. The vicious circle of hypometabolism in neurodegenerative diseases: Ways and mechanisms of metabolic correction. J Neurosci Res. 2017 Nov;95(11):2217-2235. doi: 10.1002/jnr.24064. Epub 2017 May 2. PMID: 28463438.

Hypometabolism in Neurodegenerative Diseases

It is a test that can be used to monitor frontal lobe activity and detect frontal lobe dysfunction. It requires you to change your "cognitive strategies" so by doing this trained psychologists are able to measure executive functions that primarily take place in the frontal lobes.

Example: You are normally asked to sort the cards either by color or shape (in in some instances the cards also have a number you can sort by) and throughout the test the test administrators will change what category (color vs. shape) you are sorting by. It sounds easy but gets tricky because of conflicting executive functions and choosing the correct one.


Wisconsin Card Sorting Test

Brain Hypometabolism

A researcher observes that many individuals with schizophrenia show a significant loss of neural cell bodies in the brain region responsible for executive functions like planning and problem-solving. This structural change is highly correlated with the severity of their cognitive symptoms. What is the most logical conclusion to draw from this specific observation?

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