Length and Area Estimation with Visual and Tactile Stimuli
| Autor: | Merrill V. Sapp, Douglas J. Gillan |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
030506 rehabilitation
Visual perception Modalities business.industry media_common.quotation_subject 05 social sciences 050301 education Line length Circumference Tactile stimuli Medical Terminology 03 medical and health sciences Perception Computer vision Artificial intelligence 0305 other medical science business Set (psychology) Psychology 0503 education Spatial analysis Medical Assisting and Transcription media_common |
| Zdroj: | Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 48:1875-1879 |
| ISSN: | 1071-1813 2169-5067 |
| DOI: | 10.1177/154193120404801618 |
| Popis: | Why do the psychophysical functions for line length (linear) and area (compressive) differ and do they differ for both the tactile and visual modalities? Experiments 1A and B examined the effects of a two-dimensional perception on psychophysical functions for visual perception. Participants used magnitude estimation to judge the diameter, area, and circumference of a set of 14 circles. The psychophysical functions for diameter was approximately 1.0, for area was approximately .60, and for circumference was above 1.0, indicating that two-dimensional perception, per se, does not cause the compressive function for area. Obtaining spatial information without vision can be important for people with demanding graphically based decision-making tasks and people with visual impairments. Tactile interfaces provide an alternative way to display and obtain information. Do the tactile and visual modalities process spatial information in similar ways? Experiment 2 examined the correspondence between visual and tactile perception. Participants touched, but did not see, a series of circles. For each circle they judged diameter, area, and circumference. Psychophysical functions for diameter length, circumference length, and area of a circle estimated by tactile perception in Experiment 2 were comparable to those for visual perception. |
| Databáze: | OpenAIRE |
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