The team said the three areas revealing a "significant loss" in thickness and volume of grey matter among Covid-19 patients was the "parahippocampal gyrus, the lateral orbitofrontal cortex and the superior insula," later adding that the "strongest deleterious effects of Covid-19 could be seen predominantly in the left hemisphere".
The results from the comparison of hospitalised patients "were not significant," but authors noted "comparatively similar" findings to the larger group of Covid-19 patients, "with, in addition, a greater loss of grey matter in the cingulate cortex, central nucleus of the amygdala and hippocampal cornu ammonia".
The team stopped short of pinning a causal relationship due to the study design, yet still expressed confidence in the results.
Study shows grey matter loss post-COVID infection - National Herald
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