Abstract
Three experiments were conducted to measure the temporal integration of vibrotactile patterns presented to the fingertip. In Experiment 1, letters were divided in half and the time between the onsets of the first half of the letter and second half of the letter, stimulus onset asynchrony (SOA), was varied. The recognizability of the letters declined as the SOA was increased from 9 to 100 msec. In Experiment 2, the time between two patterns constituting a masking stimulus was varied and the stimulus effectiveness in interfering with letter recognition was determined. The amount of masking increased as the SOA increased from 9 to 50 msec. In Experiment 3, the SOA between a letter and its complement (the portions of the tactile array not activated by the letter) was varied. Increasing SOA from 9 to approximately 50 msec led to increasingly accurate letter recognition. The results of the three experiments suggest that the skin is capable of complete temporal integration over a time period of less than 10 msec, and that the temporal integration function becomes asymptotic in 50 to 100 msec. The results also suggest that the onset of a vibrotactile pattern is critical for generating contours. The implications of the results for modes of generating tactile patterns and for temporal masking functions are discussed.
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Berglund, B., Berglund, U., &Ekman, G. Temporal integration of vibrotactile stimulation.Perceptual and Motor Skills, 1967,25, 549–560.
Breitmeyer, B. G., &Ganz, L. Implications of sustained and transient channels for theories of visual pattern masking, saccadic suppression, and information processing.Psychological Review, 1976,83, 1–36.
Craig, J. C. Vibrotactile pattern recognition and masking. In G. Gordon (Ed.),Active touch—the mechanism of recognition of objects by manipulation: A multi-disciplinary approach. Oxford: Pergamon Press, 1978.
Craig, J. C. A confusion matrix for tactually presented letters.Perception & Psychophysics, 1979,26, 409–411.
Craig, J. C. Modes of vibrotactile pattern perception.Journal of Experimental Psychology: Human Perception and Performance, 1980,6, 151–166.
Craig, J. C. Tactile letter recognition: Pattern duration and modes of pattern generation.Perception & Psychophysics, 1981,30, 540–546.
Craig, J. C. Vibrotactile masking: A comparison of energy and pattern maskers.Perception & Psychophysics, 1982,31, 523–529.
Di Lollo, V. Temporal integration in visual memory.Journal of Experimental Psychology: General, 1980,109, 75–97.
Eriksen, C. W., &Collins, J. F. Some temporal characteristics of visual pattern perception.Journal of Experimental Psychology, 1967,74, 476–484.
Felsten, G., &Wasserman, G. S. Visual masking: Mechanisms and theories.Psychological Bulletin, 1980,88, 329–353.
Gescheider, G. A. Evidence in support of the duplex theory of mechanoreception.Sensory Processes, 1976,1, 68–76.
Green, B. G. Vibrotactile temporal summation: Effects of frequency.Sensory Processes, 1976,1, 138–149.
Loomis, J. M. Tactile letter recognition under different modes of stimulus presentation.Perception & Psychophysics, 1974,16, 401–408.
Massaro, D. W.Experimental psychology and information processing. Chicago: Rand McNally, 1975.
Turvey, M. T. On peripheral and central processes in vision: Inferences from an information-processing analysis of masking with patterned stimuli.Psychological Review, 1973,80, 1–52.
Verrillo, R. T. Temporal summation in vibrotactile sensitivity.Journal of the Acoustical Society of America, 1965,37, 843–846.
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This research was supported by Grant NS-09783 from the National Institutes of Health.
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Craig, J.C. Temporal integration of vibrotactile patterns. Perception & Psychophysics 32, 219–229 (1982). https://doi.org/10.3758/BF03206226
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DOI: https://doi.org/10.3758/BF03206226