Unlocking the potential of 'passive' modulation: How sensory stimulation shapes hand and face size.

IF 2 4区 心理学 Q2 PSYCHOLOGY Journal of Neuropsychology Pub Date : 2024-06-14 DOI:10.1111/jnp.12379
Laura Mora, Giorgia Committeri, Teresa L'Abbate, Gianna Cocchini
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Abstract

Knowledge of the body size is intricately tied to multisensory integration processes that rely on the dynamic interplay of top-down and bottom-up mechanisms. Recent years have seen the development of passive sensory stimulation protocols aimed at investigating the modulation of various cognitive functions, primarily inducing perceptual learning and behaviour change without the need for extensive training. Given that reductions in sensory input have been associated with alterations in body size perception, it is reasonable to hypothesize that increasing sensory information through passive sensory stimulation could similarly influence the perception of the size of body parts. The primary aim of this study was to investigate the potential modulatory effects of passive sensory stimulation on the perception of hand and face size in a group of young adults. Passive sensory stimulation effectively modulated the size representation of the stimulated hand, supporting the notion that access to somatosensory and proprioceptive information is prioritised for the hands but may not extend to the face. Increased somatosensory input resulted in a reduction of distortion, providing evidence for bottom-up modulation of size representation. Passive sensory stimulation can induce subjective changes in body size perception without the need for extensive training. This paradigm holds promise as a potential alternative for modulating distorted size representation in individuals with body representational deficits.

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释放 "被动 "调制的潜力:感官刺激如何塑造手和脸的大小
对身体大小的认识与多感官整合过程密切相关,而多感官整合过程依赖于自上而下和自下而上机制的动态相互作用。近年来,人们开发了被动感官刺激方案,旨在研究各种认知功能的调节,主要是诱导感知学习和行为改变,而无需进行大量训练。鉴于感官输入的减少与体型感知的改变有关,我们有理由假设,通过被动感官刺激增加感官信息也会同样影响对身体部位大小的感知。本研究的主要目的是调查被动感官刺激对一组年轻人手部和面部大小感知的潜在调节作用。被动感官刺激有效地调节了受刺激手部的大小表征,支持了这样一种观点,即躯体感觉和本体感觉信息的获取优先于手部,但可能不会延伸到面部。躯体感觉输入的增加导致失真减少,为自下而上调节大小表征提供了证据。被动感官刺激可诱导身体尺寸感知的主观变化,而无需大量训练。这种范式有望成为一种潜在的替代方法,用于调节身体表征缺陷患者扭曲的体型表征。
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来源期刊
Journal of Neuropsychology
Journal of Neuropsychology 医学-心理学
CiteScore
4.50
自引率
4.50%
发文量
34
审稿时长
>12 weeks
期刊介绍: The Journal of Neuropsychology publishes original contributions to scientific knowledge in neuropsychology including: • clinical and research studies with neurological, psychiatric and psychological patient populations in all age groups • behavioural or pharmacological treatment regimes • cognitive experimentation and neuroimaging • multidisciplinary approach embracing areas such as developmental psychology, neurology, psychiatry, physiology, endocrinology, pharmacology and imaging science The following types of paper are invited: • papers reporting original empirical investigations • theoretical papers; provided that these are sufficiently related to empirical data • review articles, which need not be exhaustive, but which should give an interpretation of the state of research in a given field and, where appropriate, identify its clinical implications • brief reports and comments • case reports • fast-track papers (included in the issue following acceptation) reaction and rebuttals (short reactions to publications in JNP followed by an invited rebuttal of the original authors) • special issues.
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