Abstract
Stimulus orientation discrimination was investigated in visual and haptic modalities under conditions of simultaneous matching and memory. Discrimination of vertical and horizontal was significantly more accurate than discrimination of oblique stimulus orientations (45°, 135°, 225°, and 315°) for both modalities; haptic errors, however, were significantly greater at each orientation. While subjects were reliably more accurate in visually matching oblique stimulus orientations to a standard than producing them from memory, for the haptic modality, differences between memory and matching conditions were less consistent across the orientations sampled.
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This research was supported by a grant (A8621) from the National Research Council of Canada to E. C. Lechelt.
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Lechelt, E.C., Eliuk, J. & Tanne, G. Perceptual orientational asymmetries: A comparison of visual and haptic space. Perception & Psychophysics 20, 463–469 (1976). https://doi.org/10.3758/BF03208283
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DOI: https://doi.org/10.3758/BF03208283