Summary
Single neuronal activity was recorded in the crown of the postcentral gyrus (areas 1 and 2) in 5 conscious monkeys. A total of 88 penetrations entered perpendicularly to the cortical surface. Among them, 6 examples are chosen and the receptive field characteristics of constituent neurons were described in some detail. Receptive fields of neurons recorded along a particular penetration were variable in their positions, but the largest receptive field usually covered the others. Neurons with the largest receptive fields were found most frequently in the infragranular layers. Often they included inhibitory receptive fields. The inhibitory receptive fields were arranged side-by-side to the excitatory ones, rather than in a center-surround fashion. The key stimulus common to neurons in a vertical penetration was the contact of an object to the receptive field achieved during animal's active behavior to manipulate the object. We thus designated the largest receptive field as a functional surface. Our results demonstrate that a vertical array of neurons in this cortical region can be regarded as a functional assemblage which deals with a set of information concerning one of various aspects of active touch.
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References
Arbib MA (1985) Coordinated control programs for movements of the hand. Exp Brain Res Suppl 10: (in press).
Bullier J, Henry GH (1979) Laminar distribution of first-order neurons and afferent terminals in cat striate cortex. J Neurophysiol 42: 1271–1281.
Cole J, Glees P (1953) Effects of small lesions in sensory cortex in trained monkeys. J Neurophysiol 17: 1–13.
Foerster O (1936) Symptomatologie der Erkrankungen des Gehirns. Motorische Felder und Bahnen. In: Bunke O, Foerster O (eds) Handbuch der Neurologie, Vol 6. Springer, Berlin Heidelberg, pp 96–435.
Gilbert CD, Wiesel TN (1983) Clustered intrinsic connections in cat visual cortex. J Neuroscience 3: 1116–1133.
Hikosaka O, Tanaka M, Sakamoto M, Iwamura Y (1985) Deficits in manipulative behaviors induced by local injections of muscimol in the first somatosensory cortex of the conscious monkey. Brain Res 325: 375–380.
Hullinger M, Nordh E, Thelin AE, Vallbo ÅB (1979) The responses of afferent fibres from the glabrous skin of the hand during voluntary finger movements in man. J Physiol (Lond) 291: 233–249.
Hyvärinen J, Poranen A (1974) Function of the parietal associative area 7 as revealed from cellular discharges in alert monkeys. Brain 97: 673–692.
Iwamura Y, Tanaka M (1978a) Postcentral neurons in hand region of area 2: their possible role in the form discrimination of tactile objects. Brain Res 150: 662–666.
Iwamura Y, Tanaka M (1978b) Functional organization of receptive fields in the cat somatosensory cortex. II: second representation of the forepaw in the ansate region. Brain Res 151: 61–72.
Iwamura Y, Tanaka M, Hikosaka O (1981) Cortical neuronal mechanisms of tactile perception studied in the conscious monkey. In: Katsuki Y, Sato M, Norgren R (eds) Brain mechanisms of sensation. J Wiley, New York, pp 61–70.
Iwamura Y, Tanaka M, Sakamoto M, Hikosaka O (1983a) Functional subdivisions representing different finger regions in area 3 of the first somatosensory cortex of the conscious monkey. Exp Brain Res 51: 315–326.
Iwamura Y, Tanaka M, Sakamoto M, Hikosaka O (1983b) Converging patterns of finger representation and complex response properties of the conscious monkey. Exp Brain Res 51: 327–337.
Iwamura Y, Tanaka M, Sakamoto M, Hikosaka O (1985a) Functional surface integration, submodality convergence and tactile feature detection in area 2 of the monkey somatosensory cortex. Exp Brain Res Suppl 10: 44–58.
Iwamura Y, Tanaka M, Sakamoto M, Hikosaka O (1985b) Comparison of the hand and finger representation in areas 3b, 1 and 2 of the monkey somatosensory cortex. In: Rowe M, Willis WD (eds) Development, organization and processing in somatosensory pathways. Alan R Liss, New York (in press).
Iwamura Y, Tanaka M, Sakamoto M, Hikosaka O (1985c) Diversity in receptive field properties of vertical neuronal arrays in the crown of the postcentral gyrus of the conscious monkey. Exp Brain Res 58: 400–411.
Jones EG, Wise SP (1977) Size, laminar and columnar distribution of efferent cells in the sensory-motor cortex of monkeys. J Comp Neurol 175: 391–438.
Kruger L, Porter P (1958) A behavioral study of the functions of the Rolandic cortex in the monkey. J Comp Neurol 109: 439–469.
Mountcastle VB, Lynch JC, Georgopoulos A, Sakata H, Acuna C (1975) Posterior parietal association cortex of the monkey: command functions for operations within extrapersonal space. J Neurophysiol 38: 871–908.
Mountcastle VB, Powell TPS (1959) Neural mechanisms subservsing cutaneous sensibility, with special reference to the role of afferent inhibition in sensory perception and discrimination. Bull Johns Hok Hosp 105: 201–232.
Orbach J, Chow KL (1959) Differential effects of resections of somatic areas I and II in monkeys. J Neurophysiol 22:195–203.
Peele TL (1944) Acute and chronic parietal lobe ablations in monkeys. J Neurophysiol 7: 269–286.
Sakata H, Takaoka Y, Kawarasaki A, Shibutani H (1973) Somatosensory properties of neurons in the superior parietal cortex (area 5) of the rhesus monkey. Brain Res 64: 85–102.
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Supported by grants from the Japanese Ministry of Education
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Iwamura, Y., Tanaka, M., Sakamoto, M. et al. Vertical neuronal arrays in the postcentral gyrus signaling active touch: a receptive field study in the conscious monkey. Exp Brain Res 58, 412–420 (1985). https://doi.org/10.1007/BF00235322
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DOI: https://doi.org/10.1007/BF00235322