First and second-order motion perception after focal human brain lesions

• Published in: Vision research (Oxford) Vol. 48; no. 26; pp. 2682 - 2688
• Main Authors: Rizzo, Matthew, Nawrot, Mark, Sparks, JonDavid, Dawson, Jeffrey
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Kidlington Elsevier Ltd 01.11.2008; Elsevier
• Subjects: Adult; Aged; Aged, 80 and over; Area MT; Biological and medical sciences; Brain Damage, Chronic - physiopathology; Brain Damage, Chronic - psychology; Brain Mapping - methods; Contrast Sensitivity; Eye and associated structures. Visual pathways and centers. Vision; Female; Fundamental and applied biological sciences. Psychology; Humans; Male; Middle Aged; Motion Perception; Occipital lobe; Pattern Recognition, Visual; Perceptual Disorders - etiology; Perceptual Disorders - physiopathology; Perceptual Disorders - psychology; Photic Stimulation - methods; Psychometrics; Sensory Thresholds; Vertebrates: nervous system and sense organs; Visual cortex; Visual Cortex - physiopathology; Young Adult; Visual cortex; Area MT; Occipital lobe; Human; Visual pathway; Stimulus movement; Central nervous system; Lesion; Encephalon

Perception of visual motion includes a first-order mechanism sensitive to luminance changes and a second-order motion mechanism sensitive to contrast changes. We studied neural substrates for these motion types in 142 subjects with visual cortex lesions, 68 normal controls and 28 brain lesion contro...