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Visual and auditory event-related potentials in sporadic amyotrophic lateral sclerosis

Paulus, Kai Stephan and Magnano, Immacolata and Piras, Maria Rita and Solinas, M.A. and Solinas, Maria Giuliana and Sau, Gianfranco and Aiello, Isidoro Cesare Giuseppe (2002) Visual and auditory event-related potentials in sporadic amyotrophic lateral sclerosis. Clinical Neurophysiology, Vol. 113 (6), p. 853-861. ISSN 1388-2457. Article.

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DOI: 10.1016/S1388-2457(02)00082-2

Abstract

Objectives: To investigate the relationship between amyotrophic lateral sclerosis (ALS) and cognitive function by means of oddball event-related potentials (ERPs) and to determine the usefulness of this methodology in the cognitive status assessment of physically disabled patients.
Methods: Visual and auditory oddball ERPs were recorded in 16 consecutive sporadic ALS patients. A comprehensive battery of neuropsychological (NP) tests assessed intelligence, executive functions, attention, memory, word fluency, visuo-motor and visual-constructive skills.
Results: All patients performed visual and auditory ERPs and 75% of cases showed abnormal N200 and/or P300 waves. Ten patients (62.5%) carried out the entire psychometric evaluation with significant impairment on tests of executive function and attention. A significant correlation between delayed visual (P<0.04) and auditory (P<0.04) P300 latency and impaired NP tests was found.
Conclusions: In agreement with literature data, our findings confirm the hypothesis of cognitive impairment in ALS patients especially on attention and executive functions suggesting a more extensive degeneration beyond the motor areas. ALS causes severe physical disabilities and such a condition may interfere with NP testing. Thus, the P300 seems to be a useful tool for the assessment of cognition and attention when severe physical deficits are present.

Item Type:Article
ID Code:7080
Status:Published
Refereed:Yes
Uncontrolled Keywords:Amyotrophic lateral sclerosis, cognitive function, visual event-related potential, auditory event-related potential, P300
Subjects:Area 06 - Scienze mediche > MED/01 Statistica medica
Area 06 - Scienze mediche > MED/26 Neurologia
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze biomediche
001 Università di Sassari > 03 Istituti > Clinica neurologica
001 Università di Sassari > 01 Dipartimenti > Neuroscienze, scienze materno infantili
001 Università di Sassari > 03 Istituti > Igiene e medicina preventiva
Publisher:Elsevier
ISSN:1388-2457
Deposited On:09 Feb 2012 13:22

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