Differential Effects of Left Versus Right Mesial Temporal Lobe Epilepsy on Wechsler Intelligence Factors

This study investigates the effects of left versus right mesial temporal lobe epilepsy (MTLE) on Wechsler intelligence factors. In the left MTLE group, the Verbal Comprehension (VC) factor score was significantly lower than the Perceptual Organization (PO) factor score, whereas in the right MTLE gro...

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Bibliographic Details
Published in:Neuropsychology 2003-10, Vol.17 (4), p.556-565
Main Authors: Kim, Hongkeun, Yi, Sangdoe, Son, Eun Ik, Kim, Jieun
Format: Article
Language:English
Subjects:
Ability
Adult
Adult and adolescent clinical studies
Attention - physiology
Biological and medical sciences
Electroencephalography
Epilepsy
Epilepsy, Temporal Lobe - psychology
Epilepsy, Temporal Lobe - surgery
Female
Functional Laterality - physiology
Human
Humans
Intelligence
Lateral Dominance
Left Hemisphere
Magnetic Resonance Imaging
Male
Medical sciences
Memory, Short-Term
Neurosurgery
Neurosurgical Procedures
Nonverbal Ability
Organic mental disorders. Neuropsychology
Perception - physiology
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Right Hemisphere
Temporal Lobe
Treatment Outcome
Treatment Outcomes
Verbal Ability
Verbal Behavior
Wechsler Scales
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Summary:This study investigates the effects of left versus right mesial temporal lobe epilepsy (MTLE) on Wechsler intelligence factors. In the left MTLE group, the Verbal Comprehension (VC) factor score was significantly lower than the Perceptual Organization (PO) factor score, whereas in the right MTLE group, the PO factor score was significantly lower than the VC factor score. The VC factor score was significantly lower for the left than the right MTLE group, whereas the PO factor score was significantly lower for the right than the left MTLE group. Thus, left versus right MTLE was associated with relative deficits in verbal versus nonverbal intelligence, respectively. These findings indicate that lateralized cognitive deficits in unilateral MTLE patients are not limited to the learning-memory domain but include more global intelligence functions.
ISSN:0894-4105
1931-1559
DOI:10.1037/0894-4105.17.4.556