Investigating common properties of across-channel processing in space, time and speech perception

[A] The commonality of across-channel processing in time, space, and speech perception

Psychoacoustical experiments are conducted to explore common mechanisms that underlie across-channel processing in time, space and speech perception. We measures individual thresholds of between-frequency and between-ear gap detection, together with the perceptual boundaries of voice onset time (VOT) between voiced and voiceless consonants, e.g. /b/ and /p/, /d/ and /t/, and examine the relationship between the two. We also investigate the effects of perceptual learning. Can training on between-frequency gap detection improve the performance of between-ear gap detection as well as the identification of voiced and voiceless consonants? If there are indeed common mechanisms underlying these processes, we expect that perceptual learning will enhance the performance of the two latter tasks.