Neural model of first-order and second-order motion perception and magnocellular dynamics
نویسندگان
چکیده
منابع مشابه
Neural model of first-order and second-order motion perception and magnocellular dynamics.
A neural model of motion perception simulates psychophysical data concerning first-order and second-order motion stimuli, including the reversal of perceived motion direction with distance from the stimulus (gamma display), and data about directional judgments as a function of relative spatial phase or spatial and temporal frequency. Many other second-order motion percepts that have ascribed to...
متن کاملA Neural Model of First-order and Second-order Motion Perception and Magnocellular Dynamics
A neural model of motion perception simulates psychophysical data concerning rst-order and second-order motion stimuli, including the reversal of perceived motion direction with distance from the stimulus ( display), and data about directional judgments as a function of relative spatial phase or spatial and temporal frequency. Many other second-order motion percepts that have been ascribed to a...
متن کاملPerception of first- and second-order motion: separable neurological mechanisms?
An unresolved issue in visual motion perception is how distinct are the processes underlying "first-order" and "second-order" motion. The former is defined by spatiotemporal variations of luminance and the latter by spatiotemporal variations in other image attributes, such as contrast or depth. Here we describe two neurological patients with focal unilateral lesions whose contrasting perceptual...
متن کاملMotion aftereffect of combined first-order and second-order motion.
When, after prolonged viewing of a moving stimulus, a stationary (test) pattern is presented to an observer, this results in an illusory movement in the direction opposite to the adapting motion. Typically, this motion aftereffect (MAE) does not occur after adaptation to a second-order motion stimulus (i.e. an equiluminous stimulus where the movement is defined by a contrast or texture border, ...
متن کاملContrast gain control in first- and second-order motion perception.
A novel pedestal-plus-test paradigm is used to determine the nonlinear gain-control properties of the first-order (luminance) and the second-order (texture-contrast) motion systems, that is, how these systems' responses to motion stimuli are reduced by pedestals and other masking stimuli. Motion-direction thresholds were measured for test stimuli consisting of drifting luminance and texture-con...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Optical Society of America A
سال: 1999
ISSN: 1084-7529,1520-8532
DOI: 10.1364/josaa.16.000953