HEMISPHERIC SPECIALIZATION IN VISION AND AUDITION

描述：这项建议中考察的主要假设是 左脑专门处理高频刺激 视觉和听觉，而右脑是专为 在两种模式下处理低频刺激。半球 提出了视觉中不同空间频率的特化 塞金特，调查员和他的合作者提供了 有证据表明，在声音频率方面可能存在类似的专业化。 这一提议进一步研究了不对称半球的性质。 中高频和低频信息的专业化 听力&通过检测正常人的听觉不对称性在视觉上的表现 (实验1和实验2)，患者的听觉和视觉不对称 局灶性病变(实验3和4)，正常对照 受试者(实验5、6和7)和语音的听觉不对称 正常组和患者组的知觉(实验8-11)。此外, 视觉和听觉半球不对称的联结主义模型 被提出。

DESCRIPTION: The main hypothesis examined in this proposal is that the left hemisphere is specialized for processing high-frequency stimuli in vision and in audition, and that the right hemisphere is specialized for processing low-frequency stimuli in both modalities. Hemispheric specialization for different spatial frequencies in vision was proposed by Sergent, and the investigator and his collaborators have provided evidence that a parallel specialization may exit for sound frequencies. This proposal further examines the nature of asymmetric hemispheric specialization for high-frequency and low-frequency information in audition & in vision by examining auditory asymmetries in normal subjects (Experiments 1 and 2), auditory and visual asymmetries in patients with focal lesions (Experiments 3 and 4), crossmodal comparisons in normal subjects (Experiments 5, 6 and 7), and auditory asymmetries for speech perception in normal and patient groups (Experiments 8-11). In addition, a connectionist model of hemispheric asymmetries in vision and audition is proposed.