Julie Lachapelle

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Visual evoked potentials (VEPs) were recorded to textures segregated by gradients in orientation or motion. Recordings were obtained in traumatic brain-injured (TBI) subjects and in normal controls. We analyzed both the low-level VEPs (llVEPs) evoked by homogenous stimuli, as well as the components associated with texture segregation (tsVEP) obtained(More)
PRIMARY OBJECTIVE To evaluate low-level to complex information processing using visual electrophysiology and to examine the latter's prognostic value in regards to vocational outcome in persons having sustained a mild traumatic brain injury (mTBI). RESEARCH DESIGN/METHODS Event-related potentials (ERPs) were recorded to pattern-reversal, simple motion,(More)
Orientation is one of the visual dimensions that subserve figure-ground discrimination. A spatial gradient in orientation leads to “texture segregation”, which is thought to be concurrent parallel processing across the visual field, without scanning. In the visual-evoked potential (VEP) a component can be isolated which is related to texture segregation(More)
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