Relationship between memory tests and volumetry and relaxometry of the hippocampus

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Subtitle: Relación entre los tests de memoria y la volumetría y relaxometría del hipocampo
Author list: Orozco-Giménez, C., Pastor-Pons, E., Meersmans Sanchez-Jofre, M., Verdejo, A., Pérez-García, M.
Publisher: Cesar Viguera
Publication year: 2005
Journal: Revista de Neurologia (0210-0010)
Volume number: 40
Issue number: 3
Start page: 129
End page: 134
Number of pages: 6
ISSN: 0210-0010
Languages: Spanish-Spain (ES-ES)


Abstract

Introduction and aims. Interdisciplinary research made by
neuropsychologist, neurologists and radiologists is making possible
descriptions of the anatomic bases of memory. The hippocampus is one of
the main structures related to memory processing. The aim of the present
study was to study the relationship between verbal and visual memory,
and the volumetry and relaxometry of the. Patients and methods. 36
patients with temporal lobe epilepsy and mesial temporal sclerosis
(MTS). Fist, a neuropsychological assessment of was made the verbal and
visual memory. Second, hippocampal structure were studied by magnetic
resonance image (hippocampal volumetry and relaxometry). Results and
conclusions. Reactive gliosis measured by T2 relaxation time
predicted poorer visual memory in patients with right or left MTS. These
results indicate that structural damage in right hippocampus implies
worse performance in visual memory. Moreover, MTS was found to have
negative effects on contralateral memory (poorer verbal memory in right
MTS, and poorer visual memory in left MTS). These results could be due
to memory compensation. Thus, the memory function associated with the
sclerotic hippocampus is adopted by the contralateral structure.
Therefore, the more damage there is to the latter, the poorer is the
memory functioning


Keywords

Hippocampus, Memory, Neuropsychology, Relaxometry, Temporal lobe epilepsy, Volumetry


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