Ken Johnson Publications
Research paper references.
DiCarlo JJ, Johnson KO (2002) Receptive field structure in cortical area 3b of the alert monkey. Behav. Brain Res. In Press.

Hsiao SS, Yoshioka T, Johnson KO (2002) Neural basis for somesthesis. In: Encyclopedia of Cognitive Science, Macmillan

Hsiao SS, Johnson KO, Yoshioka T (2002) Neural mechanisms of tactile perception. In: Comprehensive Handbook of Psychology, Volume 3: Biological Psychology (Gallagher M, Nelson RJ eds), in press, New York: Wiley.

Johnson KO (2002) Neural basis of haptic perception. In: Stevens Handbook of Experimental Psychology, Third Edition: Volume 1. Sensation and Perception (Pashler H, Yantis S eds), pp 537- 583. New York: Wiley.

Johnson KO, Hsiao SS, Yoshioka T (2002) Neural coding and the basic law of psychophysics. Neuroscientist 8:111-121.

Niebur E, Hsiao SS, Johnson KO (2002) Synchrony: a neuronal mechanism for attentional selection? Curr. Opin. Neurobiol. 12:190-194.

Vega-Bermudez F, Johnson KO (2002) Spatial acuity after digit amputation. Brain 125:1256-1264.

Johnson KO, Yoshioka T (2001) Neural mechanisms of tactile form and texture perception. In: The Somatosensory System: Deciphering the Brain's Own Body Image (Nelson RJ ed), pp 73-101. Boca Raton: CRC Press

Johnson KO (2001) The roles and functions of cutaneous mechanoreceptors. Curr. Opin. Neurobiol. 11:455-461.

Vega-Bermudez F, Johnson KO (2001) Differences in spatial acuity between digits. Neurology 56:1389-1391.

Yoshioka T, Gibb B, Dorsch AK, Hsiao SS, Johnson KO (2001) Neural coding mechanisms underlying perceived roughness of finely textured surfaces. J. Neurosci. 21:6905-6916.

Craig JC, Johnson KO (2000) The two-point threshold: not a measure of tactile spatial resolution. Curr. Dir. Psychol. Sci. 9:29-32.

DiCarlo JJ, Johnson KO (2000) Spatial and temporal structure of receptive fields in primate somatosensory area 3b: effects of stimulus scanning direction and orientation. J. Neurosci. 20:495- 510.

Johnson KO, Yoshioka T, Vega-Bermudez F (2000) Tactile functions of mechanoreceptive afferents innervating the hand. J. Clin. Neurophysiol. 17:539-558.

Johnson KO (2000) Neural coding. Neuron 26:563-566.

Kaczmarek KA, Tyler ME, Brisben AJ, Johnson KO (2000) The afferent neural response to electrotactile stimuli: preliminary results. IEEE Trans. Rehabil. Eng. 8:268-270.

Roy A, Steinmetz PN, Johnson KO, Niebur E (2000) Model-free detection of synchrony in neuronal spike trains with an application to somatosensory cortex. Neurocomputing 32-33:1103-1108.

Steinmetz PN, Roy A, Fitzgerald PJ, Hsiao SS, Johnson KO, Niebur E (2000) Attention modulates synchronized neuronal firing in primate somatosensory cortex. Nature 404:187-190.

Brisben AJ, Hsiao SS, Johnson KO (1999) Detection of vibration transmitted through an object grasped in the hand. J. Neurophysiol. 81:1548-1558.

DiCarlo JJ, Johnson KO (1999) Velocity invariance of receptive field structure in somatosensory cortical area 3b of the alert monkey. J. Neurosci. 19:401-419.

Vega-Bermudez F, Johnson KO (1999) SA1 and RA receptive fields, response variability, and population responses mapped with a probe array. J. Neurophysiol. 81:2701-2710.

Vega-Bermudez F, Johnson KO (1999) Surround suppression in the responses of primate SA1 and RA mechanoreceptive afferents mapped with a probe array. J. Neurophysiol. 81:2711-2719.

DiCarlo JJ, Johnson KO, Hsiao SS (1998) Structure of receptive fields in area 3b of primary somatosensory cortex in the alert monkey. J. Neurosci. 18:2626-2645.

Pawluk DTV, van Buskirk CP, Killebrew JH, Hsiao SS, Johnson KO (1998) Control and pattern specification for a high density tactile display. In: Proc. of the ASME Dynamic Systems and Control Division, ASME International Mechanical Engineering Congress and Exposition, DSC-Vol. 64 (Furness RJ ed), pp 97-102.

Blake DT, Johnson KO, Hsiao SS (1997) Monkey cutaneous SAI and RA responses to raised and depressed scanned patterns: effects of width, height, orientation, and a raised surround. J. Neurophysiol. 78:2503-2517.

DiCarlo JJ, Lane JW, Hsiao SS, Johnson KO (1996) Marking microelectrode penetrations with fluorescent dyes. J. Neurosci. Methods 64:75-81.

Hsiao SS, Johnson KO, Twombly IA, DiCarlo JJ (1996) Form processing and attention effects in the somatosensory system. In: Somesthesis and the Neurobiology of the Somatosensory Cortex (Franzén O, Johansson RS, Terenius L eds), pp 229-247. Basel: Birkhäuser Verlag.

Johnson KO, Hsiao SS, Blake DT (1996) Linearity as the basic law of psychophysics: Evidence from studies of the neural mechanisms of roughness magnitude estimation. In: Somesthesis and the Neurobiology of the Somatosensory Cortex (Franzén O, Johansson RS, Terenius L eds), pp 213-228. Basel: Birkhäuser Verlag.

Johnson KO, Popovic D, Riso RR, Koris M, Van Doren CL, Kantor C (1995) Perspectives on the role of afferent signals in control of motor neuroprostheses. Med. Eng. Phys. 17:481-496.

Johnson KO, Hsiao SS, Twombly IA (1995) Neural mechanisms of tactile form recognition. In: The Cognitive Neurosciences (Gazzaniga MS ed), pp 235-268. Cambridge, Massachusetts: The MIT Press.

Johnson KO, Van Boven RW, Hsiao SS (1994) The perception of two points is not the spatial resolution threshold. In: Touch, Temperature, and Pain in Health and Disease: Mechanisms and Assessments (Boivie J, Hansson P, Lindblom U eds), pp 389-404. Seattle: IASP Press.

Johnson KO, Hsiao SS (1994) Evaluation of the relative roles of slowly and rapidly adapting afferent fibers in roughness perception. Can. J. Physiol. Pharmacol. 72:488-497.

Van Boven RW, Johnson KO (1994) A psychophysical study of the mechanisms of sensory recovery following nerve injury in humans. Brain 117:149-167.

Van Boven RW, Johnson KO (1994) The limit of tactile spatial resolution in humans: Grating orientation discrimination at the lip, tongue and finger. Neurology 44:2361-2366.

Bankman IN, Johnson KO, Schneider W (1993) Optimal detection, classification, and superposition resolution in neural waveform recordings. IEEE Trans. Biomed. Eng. 40:836-841.

Hsiao SS, O'Shaughnessy DM, Johnson KO (1993) Effects of selective attention of spatial form processing in monkey primary and secondary somatosensory cortex. J. Neurophysiol. 70:444-447.

Hsiao SS, Johnson KO, Twombly IA (1993) Roughness coding in the somatosensory system. Acta Psychol. (Amst. ) 84:53-67.

Connor CE, Johnson KO (1992) Neural coding of tactile texture: comparisons of spatial and temporal mechanisms for roughness perception. J. Neurosci. 12:3414-3426.

Johnson KO, Hsiao SS (1992) Neural mechanisms of tactual form and texture perception. Annu. Rev. Neurosci. 15:227-250.

Phillips JR, Johansson RS, Johnson KO (1992) Responses of human mechanoreceptive afferents to embossed dot arrays scanned across fingerpad skin. J. Neurosci. 12:827-839.

Johnson KO, Phillips JR, Hsiao SS, Bankman IN (1991) Tactile pattern recognition. In: Information Processing in the Somatosensory System (Franzén O, Westman J eds), pp 305-318. London: Macmillan.

Vega-Bermudez F, Johnson KO, Hsiao SS (1991) Human tactile pattern recognition: Active versus passive touch, velocity effects, and patterns of confusion. J. Neurophysiol. 65:531-546.

Bankman IN, Johnson KO, Hsiao SS (1990) Neural image transformation in the somatosensory system of the monkey: Comparison of neurophysiological observations with responses in a neural network model. Cold Spring Harb. Symp. Quant. Biol. 55:611-620.

Connor CE, Hsiao SS, Phillips JR, Johnson KO (1990) Tactile roughness: neural codes that account for psychophysical magnitude estimates. J. Neurosci. 10:3823-3836.

Phillips JR, Johansson RS, Johnson KO (1990) Representation of Braille characters in human nerve fibers. Exp. Brain Res. 81:589-592.

Bankman IN, Johnson KO, Hsiao SS, Phillips JR (1989) A neural network model of transformations in the somatosensory system. Proc. IEEE EMBS-11:2060-2061.

Johnson KO, Phillips JR (1988) A rotating drum stimulator for scanning embossed patterns and textures across the skin. J. Neurosci. Methods 22:221-231.

Phillips JR, Johnson KO, Hsiao SS (1988) Spatial pattern representation and transformation in monkey somatosensory cortex. Proc. Natl. Acad. Sci. U. S. A. 85:1317-1321.

Johnson KO, Phillips JR, Freeman AW (1985) Mechanisms underlying the spatiotemporal response properties of cutaneous mechanoreceptive afferents. In: Development, Organization, and Processing in Somatosensory Pathways (Rowe MJ, Willis WD eds), pp 111-122. New York: Alan R. Liss, Inc.

Phillips JR, Johnson KO (1985) Neural mechanisms of scanned and stationary touch. J. Acoust. Soc. Am. 77:220-224.

Johnson KO, Phillips JR (1984) Spatial and nonspatial neural mechanisms underlying tactile spatial discrimination. In: Wenner-Gren International Symposium Series. Vol. 41: Somatosensory Mechanisms (von Euler C, Franzén O, Lindblom U, Ottoson D eds), pp 237-248. London: Macmillan.

Johnson KO (1983) Neural mechanisms of tactual form and texture discrimination. Fed. Proc. 42:2542- 2547.

Phillips JR, Johnson KO, Browne HM (1983) A comparison of visual and two modes of tactual letter resolution. Percept. Psychophys. 34:243-249.

Freeman AW, Johnson KO (1982) Cutaneous mechanoreceptors in macaque monkey: Temporal discharge patterns evoked by vibration, and a receptor model. J. Physiol. (Lond. ) 323:21-41.

Freeman AW, Johnson KO (1982) A model accounting for effects of vibratory amplitude on responses of cutaneous mechanoreceptors in macaque monkey. J. Physiol. (Lond. ) 323:43-64.

Johnson KO, Phillips JR (1981) Tactile spatial resolution: I. Two-point discrimination, gap detection, grating resolution, and letter recognition. J. Neurophysiol. 46:1177-1191.

Johnson KO, Lamb GD (1981) Neural mechanisms of spatial tactile discrimination: neural patterns evoked by Braille-like dot patterns in the monkey. J. Physiol. (Lond. ) 310:117-144.

Phillips JR, Johnson KO (1981) Tactile spatial resolution: III. A continuum mechanics model of skin predicting mechanoreceptor responses to bars, edges, and gratings. J. Neurophysiol. 46:1204-1225.

Phillips JR, Johnson KO (1981) Tactile spatial resolution: II. Neural representation of bars, edges, and gratings in monkey primary afferents. J. Neurophysiol. 46:1192-1203.

Darian-Smith I, Davidson I, Johnson KO (1980) Peripheral neural representation of spatial dimensions of a textured surface moving across the monkey's finger pad. J. Physiol. (Lond. ) 309:135-146.

Johnson KO (1980) Sensory discrimination: decision process. J. Neurophysiol. 43:1771-1792.

Johnson KO (1980) Sensory discrimination: neural processes preceding discrimination decision. J. Neurophysiol. 43:1793-1815.

Darian-Smith I, Johnson KO, LaMotte CC, Kenins P, Shigenaga Y, Ming VC (1979) Coding of incremental changes in skin temperature by single warm fibers in the monkey. J. Neurophysiol. 42:1316-1331.

Darian-Smith I, Johnson KO, Goodwin AW (1979) Posterior parietal cortex: relations of unit activity to sensorimotor function. Annu. Rev. Physiol. 41:141-158.

Darian-Smith I, Johnson KO, LaMotte CC, Shigenaga Y, Kenins P, Champness P (1979) Warm fibers innervating palmar and digital skin of the monkey: responses to thermal stimuli. J. Neurophysiol. 42:1297-1315.

Johnson KO, Darian-Smith I, LaMotte CC, Johnson B, Oldfield SR (1979) Coding of incremental changes in skin temperature by a population of warm fibers in the monkey: Correlation with intensity discrimination in man. J. Neurophysiol. 42:1332-1353.

Darian-Smith I, Johnson KO (1977) Thermal sensibility and thermoreceptors. J. Invest. Dermatol. 69:146-153.

Darian-Smith I, Johnson KO (1977) Temperature sense in the primate. Br. Med. Bull. 33:143-148.

Johnson KO (1977) Peripheral mechanisms of tactile sensibility: Vibratory intensity. Proc. Aust. Phsyiol. Pharmacol. Soc. 8:29-35.

Darian-Smith I, Johnson KO, La Motte C (1975) Peripheral neural determinants in the sensing of changes in skin temperature. In: The Somatosensory System (Kornhuber HH ed), pp 23-37. Stuttgart: Georg Thieme.

Hilder R, Ramey E, Darian-Smith I, Johnson KO, Dally LJ (1974) A contact stimulator for the study of cutaneous thermal sensibility. J. Appl. Physiol. 37:252-255.

Johnson KO (1974) Reconstruction of population response to a vibratory stimulus in quickly adapting mechanoreceptive afferent fiber population innervating glabrous skin of the monkey. J. Neurophysiol. 37:48-72.

Darian-Smith I, Johnson KO, Dykes RW (1973) The 'cold' fiber population innervating palmar and digital skin of the monkey: responses to cooling pulses. J. Neurophysiol. 36:325-346.

Johnson KO, Darian-Smith I, LaMotte CC (1973) Peripheral neural determinants of temperature discrimination in man: a correlative study of responses to cooling skin. J. Neurophysiol. 36:347- 370.