BINOCULAR RIVALRY IN HUMAN VISION

描述（改编自申请人摘要）：本提案将使用 研究双眼竞争的心理物理学和心理生理学程序， 稳定的双眼单视觉的破坏， 单眼输入。在竞争中，眼睛传达矛盾的信息， 大脑对视觉空间中给定位置的物体的性质的认识。面临 如果有不同的解释，大脑就会陷入一种不稳定的状态 以交替的单眼优势期为特征， 只要眼睛看到不一致的刺激。对竞争的研究 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 参与融合和立体视觉的机制，以及可能的神经伴随物 有意识的视觉感知。近年来，人们对竞争的兴趣越来越大， 但有几个重要问题仍未解决，这些问题对 双眼竞争的性质和轨迹。这项工作将研究几个 其中：a）在竞争中，竞争刺激实际上是什么？ 解释或与左右相关联的冲突图像特征 眼睛，B）全球背景在确定的时间动态的作用， 竞争，c）从视觉抑制的刺激仍然可以 有助于感知分组和场景解释，以及d）是否 当不同的单眼刺激与 生态有效的刺激条件。使用几种不同的技术 (test探查程序，惊吓反射，追踪程序，强迫选择 测试），拟议的实验旨在解决悬而未决的问题， 关于竞争的争议，包括“眼睛”与“刺激”账户 竞争。此外，这些拟议实验的结果将提供 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随物。

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.