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Age-dependent changes in visually guided saccadic eye movements.
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1990
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Age-dependent ChangesBrain FunctionMotor ControlCns AbnormalitiesOptic NerveVisual CognitionSem RecordingsNeurologyHealth SciencesOphthalmologySem ParametersRehabilitationVision ResearchMovement DisordersVisual FunctionEye TrackingNeuroscienceCentral Nervous SystemMedicine
Voluntary horizontal saccadic eye movements (SEM) were recorded in 148 drug free healthy subjects (15-75 years of age). None had history and/or objective evidences of CNS abnormalities. SEM recordings took place always at the same time of the day, after a standard lunch. Peak saccadic velocity (PSV), saccade latency (SL) and saccade accuracy (SA) were extracted for each saccade session. A negative linear correlation was found between SEM parameters (PSV, SA, SL) and age. Aged subjects showed a significant (p less than 0.01) elongation of the to locate the target, a significant (p less than 0.01) decrease in PSV and a significant (p less than 0.01) decrement in SA.