Material-Specific Memory in Temporal Lobe Epilepsy: Effects of Seizure Laterality and Language Dominance

This study investigated the effects of seizure laterality and language dominance on material-specific memory in temporal lobe epilepsy (TLE). Left TLE (LTLE) patients with left-hemisphere language dominance (LHLD) showed significantly higher nonverbal than verbal memory capacity, whereas right TLE p...

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Bibliographic Details
Published in:Neuropsychology 2003-01, Vol.17 (1), p.59-68
Main Authors: Kim, Hongkeun, Yi, Sangdoe, Son, Eun Ik, Kim, Jieun
Format: Article
Language:English
Subjects:
Adult
Adult and adolescent clinical studies
Biological and medical sciences
Brain Diseases - diagnosis
Brain Diseases - pathology
Brain Diseases - psychology
Brain Diseases - surgery
Dominance, Cerebral - physiology
Epilepsy
Epilepsy, Temporal Lobe - pathology
Epilepsy, Temporal Lobe - physiopathology
Epilepsy, Temporal Lobe - psychology
Epilepsy, Temporal Lobe - surgery
Epileptic Seizures
Female
Human
Humans
Language Tests
Lateral Dominance
Male
Medical sciences
Memory
Memory, Short-Term - physiology
Mental Recall - physiology
Neuropsychological Tests
Organic mental disorders. Neuropsychology
Pattern Recognition, Visual - physiology
Psychology. Psychoanalysis. Psychiatry
Psychomotor Performance - physiology
Psychopathology. Psychiatry
Psychosurgery
Retention (Psychology) - physiology
Serial Learning - physiology
Speech Perception - physiology
Temporal Lobe
Temporal Lobe - pathology
Temporal Lobe - physiopathology
Temporal Lobe - surgery
Verbal Learning - physiology
Verbal Memory
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Description
Summary:This study investigated the effects of seizure laterality and language dominance on material-specific memory in temporal lobe epilepsy (TLE). Left TLE (LTLE) patients with left-hemisphere language dominance (LHLD) showed significantly higher nonverbal than verbal memory capacity, whereas right TLE patients with LHLD showed significantly better verbal than nonverbal memory capacity. LTLE patients with non-left-hemisphere language dominance (NLHLD) showed significantly better verbal memory capacity compared with LTLE patients with LHLD. Thus, selective verbal or nonverbal memory deficits that are dependent on side of seizure onset were apparent in patients with LHLD but not in patients with NLHLD. Relative sparing of verbal memory capacity in LTLE patients with NLHLD may reflect interhemispheric reorganization of verbal memory function.
ISSN:0894-4105
1931-1559
DOI:10.1037/0894-4105.17.1.59