Hippocampal structure and human cognition: Key role of spatial processing and evidence supporting the efficiency hypothesis in females |
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| Authors: | Roberto Colom Jason L Stein Priya Rajagopalan Kenia Martínez David Hermel Yalin Wang Juan Álvarez-Linera Miguel Burgaleta Mª Ángeles Quiroga Pei Chun Shih Paul M Thompson |
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| Institution: | 1. Facultad de Psicología, Universidad Autónoma de Madrid, 28049 Madrid, Spain;2. Fundación CIEN, Fundación Reina Sofía, C/Valderrebollo, 5, 28031 Madrid, Spain;3. Laboratory of Neuroimaging (LONI), UCLA School of Medicine, 635 Charles E. Young Drive South, Suite 225, Los Angeles, CA 90095-7334, USA;4. Hospital Ruber Internacional, Fundación CIEN, Fundación Reina Sofía, C/Valderrebollo, 5, 28031 Madrid, Spain;5. Facultad de Psicología, Universidad Complutense de Madrid, Campus de Somosaguas, 28223 Pozuelo de Alarcón, Madrid, Spain |
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| Abstract: | Here we apply a method for automated segmentation of the hippocampus in 3D high-resolution structural brain MRI scans. One hundred and four healthy young adults completed twenty one tasks measuring abstract, verbal, and spatial intelligence, along with working memory, executive control, attention, and processing speed. After permutation tests corrected for multiple comparisons across vertices (p < .05), significant relationships were found for spatial intelligence, spatial working memory, and spatial executive control. Interactions with sex revealed significant relationships with the general factor of intelligence (g), along with abstract and spatial intelligence. These correlations were mainly positive for males but negative for females, which might support the efficiency hypothesis in women. Verbal intelligence, attention, and processing speed were not related to hippocampal structural differences. |
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