Cognitive Neuroscience Commons^™

Ipsilesional Biases In Saccades But Not Perception After Lesions Of The Human Inferior Parietal Lobule, Tony Ro, Chris Rorden, Jon Driver, Robert Rafal

Publications and Research

We examined the effects of chronic unilateral lesions to either the inferior parietal lobe, or to the dorsolateral prefrontal cortex including the frontal eye fields (FEFs), upon human visual perception and saccades in temporal-order-judgment (TOJ) tasks. Two visual events were presented on each trial, one in each hemifield at various stimulus onset asynchronies (SOAs). In the saccade task, patients moved their eyes to whichever stimulus attracted gaze first. In the perceptual-manual task, they pressed a button to indicate which stimulus was perceived first. Frontal patients showed appropriate TOJs for visual targets in both tasks. Parietal patients showed appropriate TOJs in …

The Relationship Of Naming Errors To The Future Diagnosis Of Dementia In Optimally Healthy Young-Old And Oldest-Old Adults, Connie Marie Leasure

Dissertations and Theses

Thirty-nine expository discourse samples were elicited from optimally healthy young-old (65-75 years old) and old-old (85-100 years old) adults in 19990 as part of the longitudinal Oregon Brian Aging Study (OBAS). These samples were analyzed in this study for naming errors.

The purposes of this study were to determine if the ability to name is affected by age, and to determine if naming errors produced by optimally healthy adults correlated with a future diagnosis of dementia. This study attempted to answer the following questions: 1) which age group made the most naming? and 2) which cognitive status group made the …