{"title":"知觉相似性判断无法预测工作记忆中的错误分布。","authors":"Ivan Tomić, Paul M Bays","doi":"10.1037/xlm0001172","DOIUrl":null,"url":null,"abstract":"<p><p>Population coding models provide a quantitative account of visual working memory (VWM) retrieval errors with a plausible link to the response characteristics of sensory neurons. Recent work has provided an important new perspective linking population coding to variables of signal detection, including d-prime, and put forward a new hypothesis: that the distribution of recall errors on, for example, a color wheel, is a consequence of the psychological similarity between points in that stimulus space, such that the exponential-like psychophysical distance scaling function can fulfil the role of population tuning and obviate the need to fit a tuning width parameter to recall data. Using four different visual feature spaces, we measured psychophysical similarity and memory errors in the same participants. Our results revealed strong evidence for a common source of variability affecting similarity judgments and recall estimates but did not support any consistent relationship between psychophysical similarity functions and VWM errors. At the group level, the responsiveness functions obtained from the psychophysical similarity task diverged strongly from those that provided the best fit to working memory errors. At the individual level, we found convincing evidence against an association between observed and best-fitting similarity functions. Finally, our results show that the newly proposed exponential-like responsiveness function has in general no advantage over the canonical von Mises (circular normal) function assumed by previous population coding models. (PsycInfo Database Record (c) 2024 APA, all rights reserved).</p>","PeriodicalId":50194,"journal":{"name":"Journal of Experimental Psychology-Learning Memory and Cognition","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7615806/pdf/","citationCount":"0","resultStr":"{\"title\":\"Perceptual similarity judgments do not predict the distribution of errors in working memory.\",\"authors\":\"Ivan Tomić, Paul M Bays\",\"doi\":\"10.1037/xlm0001172\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Population coding models provide a quantitative account of visual working memory (VWM) retrieval errors with a plausible link to the response characteristics of sensory neurons. Recent work has provided an important new perspective linking population coding to variables of signal detection, including d-prime, and put forward a new hypothesis: that the distribution of recall errors on, for example, a color wheel, is a consequence of the psychological similarity between points in that stimulus space, such that the exponential-like psychophysical distance scaling function can fulfil the role of population tuning and obviate the need to fit a tuning width parameter to recall data. Using four different visual feature spaces, we measured psychophysical similarity and memory errors in the same participants. Our results revealed strong evidence for a common source of variability affecting similarity judgments and recall estimates but did not support any consistent relationship between psychophysical similarity functions and VWM errors. At the group level, the responsiveness functions obtained from the psychophysical similarity task diverged strongly from those that provided the best fit to working memory errors. At the individual level, we found convincing evidence against an association between observed and best-fitting similarity functions. Finally, our results show that the newly proposed exponential-like responsiveness function has in general no advantage over the canonical von Mises (circular normal) function assumed by previous population coding models. 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引用次数: 0
摘要
群体编码模型提供了视觉工作记忆(VWM)检索错误的定量解释,并与感觉神经元的反应特征有着可信的联系。最近的研究提供了一个重要的新视角,将群体编码与信号检测变量(包括d-prime)联系起来,并提出了一个新假设:色轮等的检索错误分布是该刺激空间中各点之间心理相似性的结果,这样类似指数的心理物理距离缩放函数就能发挥群体调谐的作用,而无需将调谐宽度参数拟合到检索数据中。我们使用四个不同的视觉特征空间,测量了同一参与者的心理物理相似性和记忆错误。我们的结果有力地证明了影响相似性判断和回忆估计的共同变异性来源,但并不支持心理物理相似性函数和 VWM 误差之间的任何一致关系。在群体水平上,从心理物理相似性任务中获得的反应性函数与工作记忆错误的最佳拟合函数有很大差异。在个体层面上,我们发现了令人信服的证据,表明观察到的相似性函数与最佳拟合相似性函数之间并不存在关联。最后,我们的研究结果表明,与以前的群体编码模型所假设的典型冯-米塞斯(圆形正态)函数相比,新提出的类似指数的反应性函数总体上没有优势。(PsycInfo Database Record (c) 2022 APA, 版权所有)。
Perceptual similarity judgments do not predict the distribution of errors in working memory.
Population coding models provide a quantitative account of visual working memory (VWM) retrieval errors with a plausible link to the response characteristics of sensory neurons. Recent work has provided an important new perspective linking population coding to variables of signal detection, including d-prime, and put forward a new hypothesis: that the distribution of recall errors on, for example, a color wheel, is a consequence of the psychological similarity between points in that stimulus space, such that the exponential-like psychophysical distance scaling function can fulfil the role of population tuning and obviate the need to fit a tuning width parameter to recall data. Using four different visual feature spaces, we measured psychophysical similarity and memory errors in the same participants. Our results revealed strong evidence for a common source of variability affecting similarity judgments and recall estimates but did not support any consistent relationship between psychophysical similarity functions and VWM errors. At the group level, the responsiveness functions obtained from the psychophysical similarity task diverged strongly from those that provided the best fit to working memory errors. At the individual level, we found convincing evidence against an association between observed and best-fitting similarity functions. Finally, our results show that the newly proposed exponential-like responsiveness function has in general no advantage over the canonical von Mises (circular normal) function assumed by previous population coding models. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
期刊介绍:
The Journal of Experimental Psychology: Learning, Memory, and Cognition publishes studies on perception, control of action, perceptual aspects of language processing, and related cognitive processes.