摘要
Objective: To find out whether 14 16 year old pupils with visual perception disabilities have atypical EEG activation patterns during visual discrimination . Methods: EEG correlation indices (EEGCIs), based on the waveform characteristi cs of two EEG signals, were used as measures of slow joint activation of cortica l regions during visual discrimination in pupils with visual perception disabili ties. Results: During visual discrimination low EEGCIs were seen between the lef t temporal and both parieto occipital EEG channels in pupils with visual percep tion disabilities and in pupils with a poor occupational outcome. The pupils wit h low performance intelligence and those with difficulties in the visual discrim ination task had low EEGCIs within the left hemisphere. The left hemispheric dom inance of the findings is suggested to reflect the psychophysiology of the task since visual discrimination demands attention to details (local processing) and is thus supposed to be more strongly represented in the left hemisphere. Conclus ions: During visual discrimination, low EEGCIs were seen in the posterior and le ft hemispheric regions of pupils with disabilities in visual perception and visu al discrimination and with a poor occupational outcome. Significance: Low EEGCIs in posterior and left hemispheric regions during visual discrimination can to s ome extent be seen as neurophysiological markers for visual perception disabilit ies and a poor occupational outcome and imply an increased need for adjustment o f the educational curriculum and a need for occupational guidance.
Objective: To find out whether 14 16 year old pupils with visual perception disabilities have atypical EEG activation patterns during visual discrimination . Methods: EEG correlation indices (EEGCIs), based on the waveform characteristi cs of two EEG signals, were used as measures of slow joint activation of cortica l regions during visual discrimination in pupils with visual perception disabili ties. Results: During visual discrimination low EEGCIs were seen between the lef t temporal and both parieto occipital EEG channels in pupils with visual percep tion disabilities and in pupils with a poor occupational outcome. The pupils wit h low performance intelligence and those with difficulties in the visual discrim ination task had low EEGCIs within the left hemisphere. The left hemispheric dom inance of the findings is suggested to reflect the psychophysiology of the task since visual discrimination demands attention to details (local processing) and is thus supposed to be more strongly represented in the left hemisphere. Conclus ions: During visual discrimination, low EEGCIs were seen in the posterior and le ft hemispheric regions of pupils with disabilities in visual perception and visu al discrimination and with a poor occupational outcome. Significance: Low EEGCIs in posterior and left hemispheric regions during visual discrimination can to s ome extent be seen as neurophysiological markers for visual perception disabilit ies and a poor occupational outcome and imply an increased need for adjustment o f the educational curriculum and a need for occupational guidance.
出处
《世界核心医学期刊文摘（神经病学分册）》
2005年第2期22-22,共1页
Digest of the World Core Medical Journals:Clinical Neurology
