Abstract
Most of the studies in which the interactions between target and nontarget spatial patterns have been examined have tested patterns that are generated statically. Static patterns are those in which all the elements of the pattern are presented at the same time and at a fixed location on the skin; however, most tactile information comes to the skin by means of patterns’ being scanned across the surface of the skin. In the present study, the interactions between target and nontarget patterns were measured for patterns generated in both the static and the scanned modes. Nontarget patterns often interfere with the perception of target patterns. Using patterns generated in the static mode, previous studies have identified two factors that produce interference in pattern identification: response competition and masking. Masking, in turn, appears to be the result of temporal integration of the target and nontarget patterns, as well as the displacement of target features. In the present study, these factors were examined for patterns generatedin both static and scanned modes. Regardless of the mode in which the patterns were generated, similar functions were obtained relating identification performance to the temporal separation between the target and the nontarget patterns. Although statically generated patterns are more easily identified than scanned patterns, particularly at brief durations, mechanisms such as response competition, temporal integration, and the displacement of target features appear to be factors that affect scanned patterns to nearly the same degree as static patterns.
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Bach-y-Rita, P. (1972).Brain mechanisms in sensory substitution. New York: Academic Press.
Bliss, J. C. (1974). Summary of Optacon-related cutaneous experiments. In F. A. Geldard (Ed.),Cutaneous communication systems and devices (pp. 84–94). Austin, TX: Psychonomic Society.
Bliss, J. C., Crane, H. D., Link, S.W., &Townsend, J. T. (1966). Tactile perception of sequentially presented spatial patterns.Perception & Psychophysics,1, 125–130.
Cholewiak, R. W., &Craig, J. C. (1984). Vibrotactile pattern recognition and discrimination at several body sites.Perception& Psychophysics,35, 503–514.
Craig, J. C. (1980). Modes of vibrotactile pattern generation.Journal of Experimental Psychology: Human Perception & Performance,6, 151–166.
Craig, J. C. (1981). Tactile letter recognition:Pattern durationand modes of pattern generation.Perception & Psychophysics,30, 540–546.
Craig, J. C. (1989). Interference in localizing tactile stimuli.Perception & Psychophysics,45, 343–355.
Craig, J. C. (1995). Vibrotactile masking: The role of response competition.Perception & Psychophysics,57, 1190–1200.
Craig, J. C. (1996). Interference in identifying tactile patterns: Response competition and temporal integration.So matosensory & Motor Research,13, 199–214.
Craig, J. C. (2000). Processing of sequential tactile patterns: Effects of a neutral stimulus.Perception & Psychophysics,62, 596–606.
Craig, J. C., &Qian, X. (1997). Tactile pattern perception by two fingers: Temporal interference and response competition.Perception & Psychophysics,59, 252–265.
Evans, P. M., &Craig, J. C. (1986). Temporal integration and vibrotactile backward masking.Journal of Experimental Psychology: Human Perception & Performance,12, 160–168.
Evans, P. M., &Craig, J. C. (1992). Response competition: A major source of interference in a tactile identification task.Perception & Psychophysics,51, 199–206.
Geldard, F. A. (1966). Cutaneous coding of optical signals: The optohapt.Perception & Psychophysics,1, 377–381.
Goldish, L. H., &Taylor, H. E. (1974). The Optacon: A valuable device for blind persons.New Outlook for the Blind,68, 49–56.
Gottheil, E. F., Cholewiak, R. W., &Sherrick, C. E. (1978). The discrimination of vibratory patterns on a tactile matrix.Bulletin of the Psychonomic Society,11, 21–24.
Loomis, J. M. (1980). Interaction of display mode and character size in vibrotactile letter recognition.Bulletin of the Psychonomic Society,16, 385–387.
Loomis, J. M., &Lederman, S. J. (1986). Tactual perception. In K. R. Boff, L. Kaufman, & J. P. Thomas (Eds.),Handbook of perception and human performance: Vol. 2. Cognitive processes and performance (pp. 1–41). New York: Wiley.
Scadden, L. A. (1973). Tactile pattern recognition and body loci.Perception,2, 333–336.
Vega-Bermudez, F., Johnson, K. O., &Hsiao, S. S. (1991). Human tactile pattern recognition: Active vs. passive touch, velocity effects, and patterns of confusion.Journal of Neurophysiology,65, 531–546.
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This research was supported by National Institutes of Health Grant DC00095, National Institute on Deafness and Other Communication Disorders.
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Craig, J.C. Identification of scanned and static tactile patterns. Perception & Psychophysics 64, 107–120 (2002). https://doi.org/10.3758/BF03194560
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DOI: https://doi.org/10.3758/BF03194560