Correlates of perceptual asymmetries in dichotic listening

我的建议侧重于听觉模态中的感知不对称。我的研究计划的这个组成部分的长期目标是描述影响感知不对称的因素，以努力了解其潜在的神经功能和认知原因。我的建议的主要理论基础源于Hugdahl（2000）提出的模型，根据该模型，在任何任务中观察到的感知不对称都反映了自下而上和自上而下的组合。自下而上方面反映刺激内容和大脑组织，自上而下方面反映注意效应。但是，我建议在自顶向下的组成部分中应包括其他因素。我计划在授权期间进行一系列调查，以满足调查感知不对称中自下而上过程的短期目标。在一项研究中，听觉任务将从它们具有重要记忆成分的角度进行检查。我之前的相关研究表明，目标刺激和反应之间的延迟会影响听觉不对称的程度以及反应的模式。这些发现可以通过排练及其在观察效果中的作用来解释。在这一研究方向上提出的实验将通过语言和非语言刺激对检索前延迟的操纵来研究二元听力中记忆成分（特别是排练）的行为表现。在这方面的研究中，我还将更密切地关注双反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。第二项研究将继续我在二元聆听背景下的跨模态情感启动研究。我的学生和我确定，启动可能作为一种自上而下的刺激来影响观察到的听觉不对称。一系列的实验将基础发现扩展到单反应二分任务，单模启动，以及语言和非语言刺激。我建议的第三个研究领域将集中在情感体现在感知不对称背景下的潜在作用。这项工作将涉及在完成双耳和双听任务时对运动因素的操纵。根据可用空间，还可以描述其他调查领域。这项研究的最终目标是确定为癫痫和脑肿瘤等神经损伤患者的术前筛查提供有效和可靠的感知不对称测量的任务。因此，这项研究在测量大脑功能专门化方面具有很强的潜在意义，同时也有助于建立感知不对称模型。

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.