ERIC Number: EJ994129
Record Type: Journal
Publication Date: 2005-Nov
Pages: 14
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0022-5002
EISSN: N/A
Pilocarpine Seizures Cause Age-Dependent Impairment in Auditory Location Discrimination
Neill, John C.; Liu, Zhao; Mikati, Mohammad; Holmes, Gregory L.
Journal of the Experimental Analysis of Behavior, v84 n3 p357-370 Nov 2005
Children who have status epilepticus have continuous or rapidly repeating seizures that may be life-threatening and may cause life-long changes in brain and behavior. The extent to which status epilepticus causes deficits in auditory discrimination is unknown. A naturalistic auditory location discrimination method was used to evaluate this question using an animal model of status epilepticus. Male Sprague-Dawley rats were injected with saline on postnatal day (P) 20, or a convulsant dose of pilocarpine on P20 or P45. Pilocarpine on either day induced status epilepticus; status epilepticus at P45 resulted in CA3 cell loss and spontaneous seizures, whereas P20 rats had no cell loss or spontaneous seizures. Mature rats were trained with sound-source location and sound-silence discriminations. Control (saline P20) rats acquired both discriminations immediately. In status epilepticus (P20) rats, acquisition of the sound-source location discrimination was moderately impaired. Status epilepticus (P45) rats failed to acquire either sound-source location or sound-silence discriminations. Status epilepticus in rat causes an age-dependent, long-term impairment in auditory discrimination. This impairment may explain one cause of impaired auditory location discrimination in humans. (Contains 1 table and 3 figures.)
Descriptors: Auditory Discrimination, Seizures, Age Differences, Epilepsy, Animals, Animal Behavior, Behavioral Science Research, Auditory Stimuli, Neurological Impairments
Society for the Experimental Analysis of Behavior. Available from: Indiana University Department of Psychology. Bloomington, IN 47405. Tel: 812-334-0395; Fax: 812-855-4691; e-mail: jeab@indiana.edu; Web site: http://seab.envmed.rochester.edu/jeab/index.html
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A

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