Can I read Physiological evidence of interaction of first- and second-order motion processes in the human visual system: A magnetoencephalographic study on EtoBox?

Physiological evidence of interaction of first- and second-order motion processes in the human visual system: A magnetoencephalographic study by Ayako Sofue; Yoshiki Kaneoke; Ryusuke Kakigi is a Neuroscience article available to read on EtoBox.

What is Physiological evidence of interaction of first- and second-order motion processes in the human visual system: A magnetoencephalographic study about?

## Abstract Humans have several mechanisms for the visual perception of motion, including one that is luminance‐based (first‐order) and another that is luminance‐independent (second‐order). Recent psychophysical studies have suggested that significant interaction occurs between these two neural processes. We investigated whether such interactions are represented as neural activity measured by magnetoencephalography (MEG). The second‐order motion of a drifting sinusoidal grating, which is defined by the speed of the dot motion, did not generate a response. Apparent motion (AM) of the square area, defined by the speed of randomly moving dots, evoked a magnetic response whose latency and amplitude changed with the distance that the area moved (a second‐order characteristic), though the response properties were significantly different from those for the first‐order AM. AM, defined by both first‐ and second‐order attributes, evoked an MEG response and the latencies and the amplitudes were distributed between those for the first‐ and second‐order motions. The cortical source of the response was estimated to be around MT+. The results show a distinct difference in the neural processing of

Who reads Physiological evidence of interaction of first- and second-order motion processes in the human visual system: A magnetoencephalographic study?

Author

Ayako Sofue; Yoshiki Kaneoke; Ryusuke Kakigi

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley; Research Square (ISSN 1065-9471)

Published

2003

Language

EN

Field

Neuroscience (Life Sciences)