Timing predictability enhances regularity encoding in the human subcortical auditory pathway
| Autor: | Natàlia Gorina-Careta, Katarzyna Zarnowiec, Carles Escera, Jordi Costa-Faidella |
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| Přispěvatelé: | Universitat de Barcelona |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Auditory perception
Adult Male Periodicity Auditory Pathways Time Factors Speech recognition Stimulation Biology Electroencephalography Auditory cortex 050105 experimental psychology Article 03 medical and health sciences 0302 clinical medicine medicine Auditory system Humans 0501 psychology and cognitive sciences Attention Predictability Set (psychology) Auditory Cortex Multidisciplinary medicine.diagnostic_test 05 social sciences Anticipation Psychological Percepció auditiva medicine.anatomical_structure Acoustic Stimulation Cerebral cortex Pattern Recognition Physiological Percepció Auditory Perception Evoked Potentials Auditory Female Perception Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | Dipòsit Digital de la UB Universidad de Barcelona Scientific Reports Recercat. Dipósit de la Recerca de Catalunya instname |
| Popis: | The encoding of temporal regularities is a critical property of the auditory system, as short-term neural representations of environmental statistics serve to auditory object formation and detection of potentially relevant novel stimuli. A putative neural mechanism underlying regularity encoding is repetition suppression, the reduction of neural activity to repeated stimulation. Although repetitive stimulation per se has shown to reduce auditory neural activity in animal cortical and subcortical levels and in the human cerebral cortex, other factors such as timing may influence the encoding of statistical regularities. This study was set out to investigate whether temporal predictability in the ongoing auditory input modulates repetition suppression in subcortical stages of the auditory processing hierarchy. Human auditory frequency–following responses (FFR) were recorded to a repeating consonant–vowel stimuli (/wa/) delivered in temporally predictable and unpredictable conditions. FFR amplitude was attenuated by repetition independently of temporal predictability, yet we observed an accentuated suppression when the incoming stimulation was temporally predictable. These findings support the view that regularity encoding spans across the auditory hierarchy and point to temporal predictability as a modulatory factor of regularity encoding in early stages of the auditory pathway. |
| Databáze: | OpenAIRE |
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