BINOCULAR RIVALRY IN HUMAN VISION

描述(改编自申请人的摘要)：本建议书将使用 研究双眼竞争的心理物理和心理生理学程序， 不协调致稳定型双眼单眼视功能障碍 单目输入。在竞争中，眼睛传递着相互矛盾的信息 大脑对视觉空间中给定位置的物体的性质进行研究.面对面 如果有相反的解释，大脑就会陷入不稳定状态 以单眼优势的交替周期为特征的，持续为 只要眼睛看到不和谐的刺激。对竞争的研究关系到 视觉科学中的几个关键问题，包括可能的神经基础 斜视抑制、知觉组织原理、神经 涉及融合和立体视觉的机制，以及可能的神经伴随 有意识的视觉感知。近年来，人们对竞争的兴趣与日俱增， 但仍有几个重要问题尚未解决，这些问题关系到 双目竞争的性质和轨迹。拟议的工作将研究几个 其中：a)在竞争中实际上与之竞争的是什么，竞争的刺激 与左右相关联的解释或相互冲突的图像特征 眼睛，b)全球背景在确定时间动态中的作用 竞争，c)从视觉中抑制的刺激在多大程度上仍然 有助于感知分组和场景解读，以及d)是否 当不同的单眼刺激一致时，竞争就会受到影响 生态上有效的刺激条件。使用几种不同的技术 (测试探针法、惊吓反射法、跟踪法、强迫选择法 测试)，拟议的实验旨在解决未解决的问题 关于竞争的争论，包括“眼睛”与“刺激”的说法 竞争的力量。此外，这些拟议实验的结果将提供 指导神经生理学家和认知神经科学家寻求 发现竞争的实际神经伴生物。

DESCRIPTION (adapted from applicant's abstract): This proposal will use psychophysical and psychophysiological procedures to study binocular rivalry, the breakdown in stable binocular single vision resulting from discordant monocular inputs. During rivalry the eyes convey contradictory information to the brain about the nature of objects at given locations in visual space. Faced with rival interpretations, the brain lapses into an unstable state characterized by alternating periods of monocular dominance that continue as long as the eyes view discordant stimuli. The study of rivalry has bearing on several key issues in vision science including the possible neural bases of strabismic suppression, the principles of perceptual organization, neural mechanisms involved in fusion and stereopsis, and possible neural concomitants of conscious visual awareness. Interest in rivalry has grown in recent years, but several important issues remain unresolved, issues that bear importantly on the nature and locus of binocular rivalry. The proposed work will study several of these: a) what actually rivals during rivalry, competing stimulus interpretations or conflicting image features associated with left and right eyes, b) the role of global context in determining the temporal dynamics of rivalry, c) the extent to which a stimulus suppressed from vision can still contribute to perceptual grouping and scene interpretation, and d) whether rivalry is affected when dissimilar monocular stimulation is consistent with ecologically valid stimulus conditions. Using several different techniques (test probe procedure, startle reflex, tracking procedure, forced-choice testing), the proposed experiments are intended to resolve outstanding controversies concerning rivalry, including the "eye" vs. "stimulus" accounts of rivalry. In addition, results from these proposed experiments will provide guidance to neurophysiologists and cognitive neuro scientists seeking to discover the actual neural concomitants of rivalry.