Topographic EEG activations during timbre and pitch discrimination tasks using musical sounds
| Autor: | Francis Eustache, J Lambert, Patrice Rioux, Zarifian E, P. Etevenon, Hervé Platel, Bernard Lechevalier, Pascal Auzou, Jean-Claude Baron |
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| Rok vydání: | 1995 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent Cognitive Neuroscience Experimental and Cognitive Psychology Audiology Electroencephalography Auditory cortex behavioral disciplines and activities Functional Laterality Behavioral Neuroscience medicine Humans Active listening Theta Rhythm Dominance Cerebral Pitch Perception Auditory Cortex Brain Mapping Neocortex medicine.diagnostic_test Working memory Alpha Rhythm Task (computing) medicine.anatomical_structure Pitch Discrimination Female Beta Rhythm Noise Psychology Timbre Music psychological phenomena and processes Cognitive psychology |
| Zdroj: | Neuropsychologia. 33:25-37 |
| ISSN: | 0028-3932 |
| DOI: | 10.1016/0028-3932(94)00100-4 |
| Popis: | Successive auditory stimulation sequences were presented binaurally to 18 young normal volunteers. Five conditions were investigated: two reference tasks, assumed to involve passive listening to couples of musical sounds, and three discrimination tasks, one dealing with pitch, and two with timbre (either with or without the attack). A symmetrical montage of 16 EEG channels was recorded for each subject across the different conditions. Two quantitative parameters of EEG activity were compared among the different sequences within five distinct frequency bands. As compared to a rest (no stimulation) condition, both passive listening conditions led to changes in primary auditory cortex areas. Both discrimination tasks for pitch and timbre led to right hemisphere EEG changes, organized in two poles: an anterior one and a posterior one. After discussing the electrophysiological aspects of this work, these results are interpreted in terms of a network including the right temporal neocortex and the right frontal lobe to maintain the acoustical information in an auditory working memory necessary to carry out the discrimination task. |
| Databáze: | OpenAIRE |
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