Correlates of perceptual asymmetries in dichotic listening

双耳聆听中知觉不对称的相关性

• 批准号: RGPIN-2016-03635
• 负责人: Voyer, Daniel
• 金额: $ 2.55万
• 依托单位: University of New Brunswick
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=764184
• 关键词: Correlates; perceptual; asymmetries; dichotic; listening

My proposal focuses on perceptual asymmetries in the auditory modality. The long-term objective of this component of my research program is to characterize the factors affecting perceptual asymmetries in an effort to understand their underlying neuro-functional and cognitive causes. The main theoretical foundation for my proposal stems from the model proposed by Hugdahl (2000) according to which the observed perceptual asymmetry in any task reflects a combination of a bottom-up component and a top-down component. The bottom-up aspect reflects stimulus content and cerebral organization, whereas the top-down aspect refers to attentional effects. However, I am proposing that other factors should be included in the top-down component. There are a number of lines of inquiries meeting the short-term objective of investigating bottom-up processes in perceptual asymmetries that I plan to pursue during the granting period. In one line of research, auditory tasks will be examined from the perspective that they have a significant memory component. My previous work of relevance suggests that a delay between target stimuli and response affects the magnitude of auditory asymmetries as well as the pattern of responding. These findings can be explained by rehearsal and its role in the observed effects. The experiments proposed in this line of research will investigate behavioral manifestations of components of memory (especially rehearsal) in dichotic listening through the manipulation of delay before retrieval with verbal and nonverbal stimuli. In this line of research, I will also focus more closely on order of report in the two-response situation to theorize on the potential role of the decision stage in auditory asymmetries. A second line of research will continue the work that I started on cross-modal affective priming in the context of dichotic listening. My student and I established that priming might work as a top-down stimulus to affect the observed auditory asymmetries. A series of experiments will extend the base findings to a one-response dichotic task, to unimodal priming, and to verbal and nonverbal stimuli. A third area of research in my proposal will focus on the potential role of the embodiment of emotions in the context of perceptual asymmetries. This line of work will involve the manipulation of motor factors during the completion of binaural and dichotic listening tasks. Other areas of inquiry might be described, depending on available space. The ultimate goal of this research is to identify tasks that provide valid and reliable measurement of perceptual asymmetries for use in the pre-surgery screening of patient with neurological impairments such as epilepsy and brain tumors. Thus, this research has strong potential significance relevant to the measurement of functional cerebral specialization while also contributing to models of perceptual asymmetries.

我的建议重点是听觉方式中的感知不对称。我的研究计划的这一组成部分的长期目标是表征影响感知不对称的因素，以了解其潜在的神经功能和认知原因。我提案的主要理论基础源于Hugdahl（2000）提出的模型，根据该模型，任何任务中观察到的感知不对称反映了自下而上的组件和自上而下的组件的组合。自下而上的方面反映了刺激含量和脑组织，而自上而下的方面是指注意力影响。但是，我建议应将其他因素包括在自上而下的组件中。我计划在授予期内计划追求的知觉不对称过程中调查自下而上的过程的短期目标。在一条研究中，将从其具有重要的内存组件的角度检查听觉任务。我以前的相关工作表明，目标刺激和响应之间的延迟会影响听觉不对称的大小以及响应模式。这些发现可以通过排练及其在观察到的影响中的作用来解释。在这一研究中提出的实验将研究记忆成分（尤其是排练）在二分法聆听中的行为表现，并通过操纵延迟在用言语和非语言刺激中检索前操纵延迟。在这一研究中，我还将更加关注两种响应情况下的报告顺序，以理论化决策阶段在听觉不对称中的潜在作用。第二条研究将继续我在Dichotic Leans的跨模式情感启动方面开始的工作。我和我的学生确定启动可能是一种自上而下的刺激，以影响观察到的听觉不对称。一系列实验将将基本发现扩展到单响应二分法任务，单峰启动以及言语和非语言刺激。我的提案中的第三个研究领域将重点关注感知不对称的背景下情绪实施的潜在作用。这项工作将涉及在完成双耳和Dichotic听力任务期间操纵运动因素。根据可用空间，可以描述其他查询领域。这项研究的最终目的是确定可提供有效且可靠的评估感知性不对称的任务，以用于对患有癫痫和脑肿瘤等神经系统障碍患者的手术前筛查。因此，这项研究具有与测量功能性脑专业化相关的强大潜在意义，同时也有助于感知不对称的模型。