Entire Sound Representations Are Time-Compressed in Sensory Memory: Evidence from MMN
| العنوان: | Entire Sound Representations Are Time-Compressed in Sensory Memory: Evidence from MMN |
|---|---|
| المؤلفون: | Nanako Minoura, Seiji Tamakoshi, Jun'ichi Katayama, Akihiro Yagi |
| المصدر: | Frontiers in Neuroscience Frontiers in Neuroscience, Vol 10 (2016) |
| بيانات النشر: | Frontiers Media S.A., 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Speech recognition, Mismatch negativity, Stimulus (physiology), time-compression, 050105 experimental psychology, lcsh:RC321-571, 03 medical and health sciences, 0302 clinical medicine, Time compression, Psychology, 0501 psychology and cognitive sciences, Time point, Sound pressure, lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry, Temporal information, Original Research, temporal window of integration, General Neuroscience, Sensory memory, 05 social sciences, event-related brain potential, Auditory stimuli, mismatch negativity, sound representations, 030217 neurology & neurosurgery |
| الوصف: | In order to examine the encoding of partial silence included in a sound stimulus in neural representation, time flow of the sound representations was investigated using mismatch negativity (MMN), an ERP component that reflects neural representation in auditory sensory memory. Previous work suggested that time flow of auditory stimuli is compressed in neural representations. The stimuli used were a full-stimulus of 170 ms duration, an early-gap stimulus with silence for a 20 - 50 ms segment (i.e., an omitted segment), and a late-gap stimulus with an omitted segment of 110 - 140 ms. Peak MMNm latencies from oddball sequences of these stimuli, with a 500 ms SOA, did not reflect time point of the physical gap, suggesting that temporal information can be compressed in sensory memory. However, it was not clear whether the whole stimulus duration or only the omitted segment duration is compressed. Thus stimuli were used in which the gap was replaced by a tone segment with a 1/4 sound pressure level (filled), as well as the gap stimuli. Combinations of full-stimuli and one of four gapped or filled stimuli (i.e., early gap, late gap, early filled, and late filled) were presented in an oddball sequence (85% vs. 15%). If compression occurs only for the gap duration, MMN latency for filled stimuli should show a different pattern from those for gap stimuli. MMN latencies for the filled conditions showed the same pattern as those for the gap conditions, indicating that the whole stimulus duration rather than only gap duration is compressed in sensory memory neural representation. These results suggest that temporal aspects of silence are encoded in the same manner as physical sound. |
| اللغة: | English |
| تدمد: | 1662-453X 1662-4548 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc1f37a7821fba7f7f99e95e0a30431c http://europepmc.org/articles/PMC4960232 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....fc1f37a7821fba7f7f99e95e0a30431c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1662453X 16624548 |
|---|