Activation of duration-sensitive auditory cortical fields in humans |
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| Institution: | 1. Department of Neurology and Center for Neuroscience, University of California at Davis, Davis, CA, USA;2. Northern California System of Clinics, Martinez, CA 94553, USA;3. Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, Canada;1. Center for Hearing and Deafness, University at Buffalo, Buffalo, NY, USA;2. Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, Jiangsu Province, China;3. Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Rome, Italy;4. Department of Audiology and Speech-Language Pathology, Asia University, Taichung, Taiwan;1. Food for Health Ireland, University College Cork, Cork, Ireland;2. Alimentary Pharmabiotic Centre (APC) Microbiome Institute, University College Cork, Cork, Ireland;3. Dept of Psychiatry, University College Cork, Cork, Ireland;4. International Centre for Neurotherapeutics, Dublin City University, Dublin, Ireland;5. Dept of Anatomy and Neuroscience, University College Cork, Cork, Ireland;6. Helmholtz Zentrum München GnbH, Institute for Biological and Medical Imaging, 85764 Neuherberg, Germany;7. Munich School of Bioengineering, Technische Universität München (TUM), 81675 Munich, Germany;1. Centre de Recherche en Neuropsychologie et Cognition, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC H3C 3J7, Canada;2. Université du Québec à Trois-Rivières, Trois-Rivières, QC G9A 5H7, Canada;1. School of Psychology & Key Laboratory of Adolescent Cyberpsycology and Behavior (CCNU) of Ministry of Education, Central China Normal University, Wuhan, 430079, China;2. School of Life Sciences & Hubei Key Lab of Genetic Regulation and Integrative Biology, Central China Normal University, Wuhan, 430079, China |
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| Abstract: | The influence of stimulus duration on auditory evoked potentials (AEPs) was examined for tones varying randomly in duration, location, and frequency in an auditory selective attention task. Stimulus duration effects were isolated as duration difference waves by subtracting AEPs to short duration tones from AEPs to longer duration tones of identical location, frequency and rise time. This analysis revealed that AEP components generally increased in amplitude and decreased in latency with increments in signal duration, with evidence of longer temporal integration times for lower frequency tones. Different temporal integration functions were seen for different N1 subcomponents. The results suggest that different auditory cortical areas have different temporal integration times, and that these functions vary as a function of tone frequency. |
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