Previous studies have shown that the horizontal–vertical illusion for tactually explored raised-l... more Previous studies have shown that the horizontal–vertical illusion for tactually explored raised-line shapes is independent of visual status or visual imagery, since similar illusory overestimation of the vertical occurs in early blind, later blind, and low-vision participants (Heller et al., 2003) and occurs with curves (Heller et al., 2008). In the present study, we investigated whether this spatial misperception changes from adolescence to old age. In the study, participants explored a series of horizontal and vertical raised-line curves of different sizes. Exploration was unimanual or bimanual in counterbalanced order. Curve height was always equal to width at the base. The task consisted of judging the size of the curves (horizontal/vertical), using two sliding rulers. The results suggest that the illusion is independent of age, and participants overestimated the vertical in tangible curves.
Journal of Visual Impairment & Blindness, Mar 1, 1998
Dianne Catherwood, Ph.D., senior lecturer, Department of Psychology, Worcester College of Higher ... more Dianne Catherwood, Ph.D., senior lecturer, Department of Psychology, Worcester College of Higher Education, Henwick Grove, Worcester WR2 6AJ, England; E-mail: <d.catherwood@worc.ac.uk>. Lindy Drew, B.A., research officer, Centrefor Applied Studies in Early Childhood, Queensland University of Technology, Australia. Bronwyn Hein, B.A., educational advisor and coordinator, Paediatric Low Vision Clinic, and Heather Grainger, B.A., assistant coordinator, Vision Impairment Services, Queensland Department ofEducation, Australia.
Psychological studies of touch and blindness have been fraught with controversy. Within this fiel... more Psychological studies of touch and blindness have been fraught with controversy. Within this field there remains an important theoretical divide. Many researchers have taken a cognitive approach to the study of touch and blindness, relating these to higher order processes, such as memory and concept formation. Others adopt a theoretical perspective, arguing that it not necessary to consider the 'internal representation' of the stimuli, when investigating touch - thus people make use of information from the physical biomechanical properties of their limbs as they assess the physical properties of objects. In addition, psychologists differ in the relative importance they place on the modality of sensory stimulation for subsequent perceptual experiences. Some psychologists argue that touch can do many of the things that are accomplished by vision, and claim that the mode of sensory stimulation is not critically important for perception, arguing that much information can be obtained through non-visual modalities. Others suggest that there are important consequences of a lack of visual experience, arguing for the importance of multiple forms of sensory input for conceptual development. New to the Debates in Psychology series, "Touch, Representation, and Blindness" brings together the leading investigators in these areas, each presenting the evidence for their side of the debate. An introductory chapter sets the theoretical and h historical stage for the debate, and a concluding chapter draws together the different views and ideas set forth by the contributors, summarizing and resolving the discussion.Contents Introduction. Mental imagery in the blind. Modality and mind. Explaining the ability to recognise pictures via touch: Axis theory. Dynamic touch and rotational dynamics. Conclusions
1. Introduction: Historical and Philosophical Background. 2. Cognitive Neuroscience of Touch. 3 T... more 1. Introduction: Historical and Philosophical Background. 2. Cognitive Neuroscience of Touch. 3 The Haptic Perception of Objects and their Properties. 4. Illusions. 5. Intermodal Relations. 6. Development of Haptic Perception over the Life-Span. 7. Blindness: General Introduction Pattern Perception, Imagery, Spatial Orientation, and Mobility. 8. Picture Perception and Blind People. 9. Braille and New Technology. 10. Haptics in Learning Reading, Handwriting and Mathematics. 11. Tactile Interfaces and Applications. 12. General Conclusions: Implications of Current Research for Theory and Applications.
Previous studies have shown that the horizontal–vertical illusion for tactually explored raised-l... more Previous studies have shown that the horizontal–vertical illusion for tactually explored raised-line shapes is independent of visual status or visual imagery, since similar illusory overestimation of the vertical occurs in early blind, later blind, and low-vision participants (Heller et al., 2003) and occurs with curves (Heller et al., 2008). In the present study, we investigated whether this spatial misperception changes from adolescence to old age. In the study, participants explored a series of horizontal and vertical raised-line curves of different sizes. Exploration was unimanual or bimanual in counterbalanced order. Curve height was always equal to width at the base. The task consisted of judging the size of the curves (horizontal/vertical), using two sliding rulers. The results suggest that the illusion is independent of age, and participants overestimated the vertical in tangible curves.
Journal of Visual Impairment & Blindness, Mar 1, 1998
Dianne Catherwood, Ph.D., senior lecturer, Department of Psychology, Worcester College of Higher ... more Dianne Catherwood, Ph.D., senior lecturer, Department of Psychology, Worcester College of Higher Education, Henwick Grove, Worcester WR2 6AJ, England; E-mail: <d.catherwood@worc.ac.uk>. Lindy Drew, B.A., research officer, Centrefor Applied Studies in Early Childhood, Queensland University of Technology, Australia. Bronwyn Hein, B.A., educational advisor and coordinator, Paediatric Low Vision Clinic, and Heather Grainger, B.A., assistant coordinator, Vision Impairment Services, Queensland Department ofEducation, Australia.
Psychological studies of touch and blindness have been fraught with controversy. Within this fiel... more Psychological studies of touch and blindness have been fraught with controversy. Within this field there remains an important theoretical divide. Many researchers have taken a cognitive approach to the study of touch and blindness, relating these to higher order processes, such as memory and concept formation. Others adopt a theoretical perspective, arguing that it not necessary to consider the 'internal representation' of the stimuli, when investigating touch - thus people make use of information from the physical biomechanical properties of their limbs as they assess the physical properties of objects. In addition, psychologists differ in the relative importance they place on the modality of sensory stimulation for subsequent perceptual experiences. Some psychologists argue that touch can do many of the things that are accomplished by vision, and claim that the mode of sensory stimulation is not critically important for perception, arguing that much information can be obtained through non-visual modalities. Others suggest that there are important consequences of a lack of visual experience, arguing for the importance of multiple forms of sensory input for conceptual development. New to the Debates in Psychology series, "Touch, Representation, and Blindness" brings together the leading investigators in these areas, each presenting the evidence for their side of the debate. An introductory chapter sets the theoretical and h historical stage for the debate, and a concluding chapter draws together the different views and ideas set forth by the contributors, summarizing and resolving the discussion.Contents Introduction. Mental imagery in the blind. Modality and mind. Explaining the ability to recognise pictures via touch: Axis theory. Dynamic touch and rotational dynamics. Conclusions
1. Introduction: Historical and Philosophical Background. 2. Cognitive Neuroscience of Touch. 3 T... more 1. Introduction: Historical and Philosophical Background. 2. Cognitive Neuroscience of Touch. 3 The Haptic Perception of Objects and their Properties. 4. Illusions. 5. Intermodal Relations. 6. Development of Haptic Perception over the Life-Span. 7. Blindness: General Introduction Pattern Perception, Imagery, Spatial Orientation, and Mobility. 8. Picture Perception and Blind People. 9. Braille and New Technology. 10. Haptics in Learning Reading, Handwriting and Mathematics. 11. Tactile Interfaces and Applications. 12. General Conclusions: Implications of Current Research for Theory and Applications.
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Conference Presentations by Morton Heller
Papers by Morton Heller