Abstract
The simplest mechanical stimulus of supraliminal amplitude delivered to the finger tip activates a large number of afferents which may in turn evoke complex multidimensional sensations. These sensations can, to a first approximation, be understood by the response characteristics of the population of mechanoreceptive afferents innervating the glabrous skin of the hand (Johansson, 1978; Johansson, 1979). In order to study the peripheral neural basis of the sense of touch, it is necessary to investigate the relationship between the activity of both individual neurons and populations of neurons and the psychophysical responses elicited by the same or similar stimuli.
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References
Engen, T. (1971). Psychophysics II. Scaling methods. In: Woodworth and Schlosberg’s Experimental Psychology. (eds. J.W. Kling and L.A. Riggs). Holt, Rinehart and Winston, Inc., New York.
Franzén, O. (1980). The invariance of primary somatic potentials of the cortex in selective attention. Electroenceph. and Clin. Neurophys. 49, 79–81.
Franzén, O., and Offenloch, K. (1969). Evoked response correlates of psychophysical magnitude estimates for tactile stimulation in man. Exp. Brain Res. 8, 1–18.
Franzén, O., Thompson, F., and Davenport, P. (1985). The role of recruitment of cutaneous mechanoreceptors in spinal and cortical intensity functions. Acta Physiol. Scand. 124, Suppl. 542, 431.
Franzén, O., Thompson, F., Whitsel, B., and Young, M. (1984). Peripheral coding mechanisms of touch velocity. In: Somatosensory Mechanisms. (eds. C. von Euler, O. Franzén, U. Lindblom, and D. Ottoson). Macmillan Press, London, pp. 213–226.
Gardner, E.P., and Spencer, W.A. (1972). Sensory Funneling. I. Psychophysical observations of human subjects and responses of cutaneous mechanoreceptive afferents in the cat to patterned skin stimuli. J. Neurophysiol. XXXV, 925–953.
Harrington, T., and Merzenich, M.M. (1970). Neural coding in the sense of touch: Human sensations of skin indentation compared with the responses of slowly adapting mechanoreceptive afferents innervating the hairy skin of monkeys. Exp. Brain Res. 10, 251–264.
Hämäläinen, H. (1978). The peripheral neuronal basis for tactile sensations: The effects of parameters of a single tactile pulse on sensations and activity in single peripheral nerve fibres. Unpublished Phil. Lic. thesis. University of Helsinki, Helsinki, Finland.
Johansson, R. S. (1978). Tactile sensibility in the human hand: Receptive field characteristics of mechanoreceptive units in the glabrous skin area. J. Physiol. 281, 101–123.
Johansson, R.S. (1979). Tactile afferent units with small and well demarcated receptive fields in glabrous skin area of the human hand. In: Sensory Functions of the Skin of Humans. (Ed. D.R. Kenshalo)., Plenum Publishing Corp., New York. 129–145.
Jones, F.N. (1960). Subjective intensity functions in somesthesis. In: Symposium on Cutaneous Sensitivity. (ed. G.R. Hawkes). U.S. Army Med. Res. Lab. Ft. Knox, KY.
Kalikow, D.N. (1967). Psychofit. Unpublished computer program (Fortran) for the analysis of magnitude estimates. Brown University, RI, USA.
Kenshalo, D.R. Sr., Greenspan, J. D., and Henderson, R. (1984). Velocity of indentation as a variable in tactile sensation. In: Somatosensory Mechanisms. (eds. C. von Euler, O. Franzén, U. Lindblom, and D. Ottoson). Macmillan Press, London, pp. 227-235.
Knibestöl, M. (1975). Stimulus-response functions of slowly adapting mechanoreceptors in the human glabrous skin area. J. Physiol. 245, 63–80.
Mountcastle, V.B. (1967). The problem of sensing and the neural coding of sensory events. In: The Neurosciences, (eds. G.C. Quarton, T. Melnechuk, and Schmitt, F.O.). Rockefeller University Press, New York, pp. 393–408.
Steinmetz, M.A. Romo, R., and Mountcastle, V.B. (1990). The cortical neuronal mechanisms for frequency discrimination in the somesthetic sense of flutter. In: Information Processing in the Somatosensory System. (eds. O. Franzén, and J. Westman). Macmillan Press, London.
Stevens, S.S. (1957). On the psychophysical law. Psychol. Rev., 64, 153–215.
Tapper, D.N. (1965). Stimulus-response relationships in the cutaneous slowly-adapting mechanoreceptor in hairy skin of the cat. Expl. Neurol. 13, 364–385.
Vallbo, Å.B., and Hagbarth, K.-E. (1968). Activity from skin mechanoreceptors recorded percutaneously in awake human subjects. Expl. Neurol. 21, 270–289.
Werner, G., and Mountcastle, V.B. (1965). Neural activity in mechanoreceptive cutaneous afferents: Stimulus-response relations, Weber functions, and information transmission. J. Neurophysiol. 28, 359–397.
Whitsel, B.L., and Franzén, O.G. (1989). Dynamics of Information Processing in the Somatosensory Cortex. In: Brain and Reading, (eds. C. von Euler, I. Lundberg and G. Lennerstrand), Macmillan Press, London, pp. 129–137.
Whitsel, B.L., and Juliano, S.L. (1984). Imaging the responding neuronal population with 14C-2-deoxyglucose: The somatosensory cerebral cortical signature of a tactile stimulus. In: Somatosensory Mechanisms. (eds. C. von Euler, O. Franzén, U. Lindblom and D. Ottoson). Macmillan Press, London, pp. 61–80.
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© 1991 Macmillan Publishers Limited
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Franzén, O., Kenshalo, D., Essick, G. (1991). Neural Population Encoding of Touch Intensity. In: Franzén, O., Westman, J. (eds) Information Processing in the Somatosensory System. Wenner-Gren Center International Symposium Series. Palgrave, London. https://doi.org/10.1007/978-1-349-11597-6_6
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DOI: https://doi.org/10.1007/978-1-349-11597-6_6
Publisher Name: Palgrave, London
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