BINOCULAR RIVALRY IN HUMAN VISION

人类视觉中的双目竞争

• 批准号: 6723725
• 负责人: Robert Randolph Blake
• 金额: $ 11.71万
• 依托单位: VANDERBILT UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-10 至 2006-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6723725
• 关键词: behavioral /social science research tag; binocular vision; computers; data collection methodology /evaluation; human subject; neural information processing; neurophysiology; performance; psychophysics; psychophysiology; space perception; startle reaction; video recording system; visual perception; visual phototransduction; visual stimulus

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.

描述（改编自申请人的摘要）：该提案将使用 研究双眼竞争的心理物理学和心理生理学程序， 由于不一致而导致双眼单视稳定的崩溃 单眼输入。在竞争过程中，眼睛会传递矛盾的信息 大脑了解视觉空间中给定位置的物体的性质。面对 随着相反的解释，大脑陷入不稳定状态 其特点是单眼优势的交替时期持续 只要眼睛看到不和谐的刺激。竞争研究具有重要意义 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 有意识的视觉意识。近年来，人们对竞争的兴趣日益浓厚， 但有几个重要问题仍未解决，这些问题与 双眼竞争的性质和轨迹。拟议的工作将研究几个 其中：a）在竞争、竞争刺激中实际竞争对手是什么 与左和右相关的解释或冲突的图像特征 眼睛，b）全局背景在确定时间动态方面的作用 竞争，c）视觉抑制的刺激仍然可以达到的程度 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 （测试探针程序、惊吓反射、跟踪程序、强制选择 测试），所提出的实验旨在解决突出的问题 有关竞争的争议，包括“眼睛”与“刺激”账户 的竞争。此外，这些拟议实验的结果将提供 为神经生理学家和认知神经科学家寻求指导 发现竞争的实际神经伴随物。