Visual imagery without visual perception: lessons from blind subjects

Bértolo, Helder

doi:10.1117/12.2066101

Cited by 12 publications

(24 citation statements)

References 64 publications

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“…Though results may indicate that CEB simply used estabhshed metaphors or associations for sensory concepts, with no recourse to any corresponding percepts, a more intriguing possibility is suggested by studies summarized in an overview by Bértolo (2005), suggesting that visual imagery may exist without visual experience. Bértolo provides both behavioral (participants' drawings) and neurophysiological (EEG alpha rhythms associated with visual processing) evidence for the presence of visual imagery in CEB's dreams.…”

Section: Blind-sighted Similarities In Cross-modal Mappings and Theirmentioning

confidence: 96%

Listening in the dark: Congenital and early blindness and cross-domain mappings in music.

Eitan

Ornoy

Granot

2012

Psychomusicology: Music, Mind, and Brain

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We examine how individuals who are congenitally or early blind (CEB), as compared with sighted individuals, associate musical parameters with nonauditory domains. Expl (modeled after Eitan & Granot, 2006) investigated how participants associate pitch direction, loudness change and tempo change with motion features. In Exp2 (modeled after Eitan & Timmere, 2010), participants rated appropriateness of 10 antonyms as metaphors for two musical segments contrasting in pitch height. Most CEB's mappings of auditory parameters did not differ from those of the sighted. Notably, this included even the mapping of pitch onto visually based dimensions (e.g., lightness). This notwithstanding, CEB's mappings of musical parameters onto motion (Expl) were distinct in several ways. First, distance change (particularly approach) was associated by CEB with tempo and pitch change, in addition to loudness. Second, and most surprisingly, the prevalent mapping of pitch direction and vertical motion was lacking among CEB (Expl). The latter finding suggests that the elevation mapping for auditory pitch may be inherently associated with sight, perhaps stemming from early learning of spectral pinna-based elevation cues using audiovisual information.We can hardly refer to musical sound-indeed, to any soundwithout using terms derived from nonauditory domains. In a variety of languages, even the most basic terms for auditory dimensions use cross-domain mappings. We speak of pitch in terms of spatial height ("high" and "low," or "rising" and "falhng" melody), of sound quality in visual (bright/dark) or tactile (rough/

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Section: Blind-sighted Similarities In Cross-modal Mappings and Theirmentioning

confidence: 96%

Listening in the dark: Congenital and early blindness and cross-domain mappings in music.

Eitan

Ornoy

Granot

2012

Psychomusicology: Music, Mind, and Brain

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“…Mirta, whose sense of sight did not work, thought that eyes of a giver mattered even though he could not see them. This visual imagery of Mirta's was potentially developed through a process of image creation that is not resulted from any visual activity or that is restricted within language-like descriptions, rather from the "mind's eye" [3]. Seeing with "mind's eye" or having mental imagery is evidenced both in sighted and visually impaired individuals.…”

Section: Resultsmentioning

confidence: 99%

Battling Villagers in the Midst of Modern Life in Mata yang Enak Dipandang by Ahmad Tohari

Yoesoef¹

2020

Proceedings of the Proceedings of the Third International Seminar on Recent Language, Literature, and Local Culture Studies, BA

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This discussion aims to present the descriptive analysis of five short stories by Ahmad Tohari in the collection of short stories of Mata yang Enak Dipandang. Well-known for stories richly depict the life of villagers, the short stories reveal the struggles behind a seemingly homogeneous, innocent, and simple village culture with individualistic, heterogeneous, and complexed modern life. The two collide and boil down to the behaviors and reasons that represent the struggles of personal identity and its survival in the late modern life settings. It is within that context, Ahmad Tohari presents different layers of personal struggles of identity that is always faced with challenges to adapt and change in the midst of their respective era.

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“…The human ability to integrate perceptual information over time and space provides the basis of mental imagery [32,52]. Nevertheless, in our study, we relied on the fact that the sighted participants had the mental templates (visual-haptic models) of different volumetric objects.…”

Section: Methodmentioning

confidence: 99%

Virtual Sectioning and Haptic Exploration of Volumetric Shapes in the Absence of Visual Feedback

Evreinov

Raisamo

2013

Advances in Human-Computer Interaction

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The reduced behavior for exploration of volumetric data based on the virtual sectioning concept was compared with the free scanning at the use of the StickGrip linkage-free haptic device. Profiles of the virtual surface were simulated through the penholder displacements in relation to the pen tip of the stylus. One or two geometric shapes (cylinder, trapezoidal prism, ball, and torus) or their halves and the ripple surface were explored in the absence of visual feedback. In the free scanning, the person physically moved the stylus. In the parallel scanning, cross-sectional profiles were generated automatically starting from the location indicated by the stylus. Analysis of the performance of 18 subjects demonstrated that the new haptic visualization and exploration technique allowed to create accurate mental images, to recognize and identify virtual shapes. The mean number of errors was about 2.5% in the free scanning mode and 1.9% and 1.5% in the parallel scanning mode at the playback velocity of 28 mm/s and 42 mm/s, respectively. All participants agreed that the haptic visualization of the 3D virtual surface presented as the cross-sectional slices of the workspace was robust and easy to use. The method was developed for visualization of spatially distributed data collected by sensors.

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Visual imagery without visual perception: lessons from blind subjects

Cited by 12 publications

References 64 publications

Listening in the dark: Congenital and early blindness and cross-domain mappings in music.

Listening in the dark: Congenital and early blindness and cross-domain mappings in music.

Battling Villagers in the Midst of Modern Life in Mata yang Enak Dipandang by Ahmad Tohari

Virtual Sectioning and Haptic Exploration of Volumetric Shapes in the Absence of Visual Feedback

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