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Abstract #4279

Memory Recall Accuracy is Associated with Glutamatergic Neurotransmission in the Right Hippocampus

Pui Wai Chiu1,2, Hui Zhang1, Savio Wai Ho Wong3, Tianyin Liu4, Gloria Hoi Yan Wong5, Queenie Chan6, and Henry Ka Fung Mak1,2,7

1Department of Diagnostic Radiology, The University of Hong Kong, Hong Kong, Hong Kong, 2State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, Hong Kong, 3Department of Special Education and Counselling, The Education University of Hong Kong, Hong Kong, Hong Kong, 4Sau Po Centre on Ageing, The University of Hong Kong, Hong Kong, Hong Kong, 5Department of Social Work and Administration, The University of Hong Kong, Hong Kong, Hong Kong, 6Philips Healthcare, Hong Kong, Hong Kong, Hong Kong, 7Alzheimer's Disease Research Network, The University of Hong Kong, Hong Kong, Hong Kong

Memory for faceā€“name associations is an important type of memory in our daily lives, and often declines in older adults, but the neural mechanisms underlying such decline are still unknown. In this study, quantitative proton magnetic resonance spectroscopy was used to investigate the metabolic changes in the bilateral hippocampi in a local Chinese cohort at 3.0T. The relationship between metabolite concentrations and memory recall accuracy from a face-name recognition task was also assessed. Right hippocampus revealed the plausibility of compensation activity during aging, and the memory recall accuracy was associated with alterations in glutamatergic neurotransmission.

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