Cognitive reserve depends on cortical neurochemistry to predict memory after partner-inflicted brain injury

Cognitive reserve predicts delayed recall after partner-inflicted brain injury only in the most heavily injured women, and this prediction depends on lower creatine-referenced total N-acetylaspartate in posterior cingulate gyrus and dorsolateral prefrontal cortex.

• Why it matters: Memory problems after brain injury vary, and it is unclear how cognitive reserve operates when neurotrauma is repeated, especially without a large sample spanning brain-injury burden plus neurochemistry.
• What they did: In 62 women exposed to physical intimate partner violence, researchers combined wide cognitive testing with magnetic resonance spectroscopy across three regions, relating memory to partner-inflicted BI counts (0–420) and premorbid functioning, and also testing creatine-referenced total N-acetylaspartate.
• The result: BI count alone did not explain memory variance, but in a subset with high exposure (≥10 BIs; n=11) it accounted for 5% of delayed-recall variance; cognitive reserve predicted memory only among the most injured and only when neuronal-health marker levels were lower.

AI summary of the abstract · may contain errors · not medical advice · read the paper.