Auditory Processing of Biological and Linguistic Stimuli

生物和语言刺激的听觉处理

• 批准号: 6445753
• 负责人: LISA D SANDERS
• 金额: $ 3.66万
• 依托单位: UNIV OF MARYLAND, COLLEGE PARK
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/6445753
• 关键词: auditory cortex; auditory discrimination; auditory stimulus; behavior test; biological signal transduction; brain electrical activity; clinical research; electroencephalography; evoked potentials; functional magnetic resonance imaging; hearing; hearing tests; human subject; language; longitudinal human study; magnetoencephalography; motion perception; neural information processing; neurophysiology; postdoctoral investigator; sound frequency; speech recognition; temporal lobe /cortex; time perception; vocalization; young adult human (21-34)

I plan to explore the ways in which different types of auditory information, including linguistic, biological, and artificial sounds, are processed in the brain. More specifically, I will measure normal adults' abilities to discriminate these stimuli based on both motion and brief temporal differences. It is possible that linguistics stimuli, for which fast temporal processing is crucial, may be more easily processed in terms of motion. By matching non-identifiable sounds in complexity, spectral change, and band-width to each of the types of stimuli mentioned above, it will also be possible to determine if differences in the ways in which these sounds are processed are best attributed to physical differences in the stimuli or to the goals of processing. If the different types of stimuli are processed differently, it is likely that such processing involves different cortical areas. By using ERP and MEG methods, it will be possible to determine the precise times at which the processing of these different stimulus types is differentiated into different cortical pathways. By using fMRI, it will possible to determine which cortical areas are involved in processing auditory stimuli are involved in processing auditory stimuli with specific physical features and for specific goals.

我计划探索不同类型的听觉信息，包括语言、生物和人工声音，是如何在大脑中处理的。更具体地说，我将根据动作和短暂的时间差异来测量正常成年人区分这些刺激的能力。对于语言刺激来说，快速的时间处理是至关重要的，有可能在运动方面更容易处理。通过将不可识别声音的复杂性、频谱变化和带宽与上述每种类型的刺激相匹配，还可以确定这些声音处理方式的差异是否最好地归因于刺激的物理差异或处理目标。如果不同类型的刺激被不同地处理，那么这种处理很可能涉及不同的皮层区域。通过使用ERP和MEG方法，将有可能确定这些不同刺激类型的处理被分化成不同皮层通路的精确时间。通过使用功能磁共振成像，可以确定哪些皮层区域参与处理听觉刺激，哪些区域参与处理具有特定物理特征和特定目标的听觉刺激。