Echoic memory of a single pure tone indexed by change-related brain activity |
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Authors: | Koji Inui Tomokazu Urakawa Koya Yamashiro Naofumi Otsuru Yasuyuki Takeshima Makoto Nishihara Eishi Motomura Tetsuo Kida and Ryusuke Kakigi |
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Institution: | 1.Department of Integrative Physiology,National Institute for Physiological Sciences,Okazaki,Japan;2.Multidisciplinary Pain Center,Aichi Medical University,Aichi,Japan;3.Department of Psychiatry,Mie University Graduate School of Medicine,Tsu,Japan |
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Abstract: | Background The rapid detection of sensory change is important to survival. The process should relate closely to memory since it requires
that the brain separate a new stimulus from an ongoing background or past event. Given that sensory memory monitors current
sensory status and works to pick-up changes in real-time, any change detected by this system should evoke a change-related
cortical response. To test this hypothesis, we examined whether the single presentation of a sound is enough to elicit a change-related
cortical response, and therefore, shape a memory trace enough to separate a subsequent stimulus. |
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