Tactile spatial acuity at the human fingertip and lip: Bilateral symmetry and inter-digit variability

被引：100

作者：

Sathian, K

Zangaladze, A

机构：

来源：

NEUROLOGY | 1996年 / 46卷 / 05期

关键词：

D O I：

10.1212/WNL.46.5.1464

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

We used the spatial threshold for discrimination of grating orientation to assess tactile spatial acuity at the lower lip and each fingertip, bilaterally, in seven normal human subjects. We confirmed previous findings that: (1) this test is highly reliable, and (2) acuity at the lip is substantially higher than at the fingertips. In addition, we showed that: (1) acuity does not differ significantly between right and left sides, and (2) among fingertips, acuity is lowest at the fifth digit and comparable on the other digits.

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页码：1464 / 1466

页数：3

相关论文

共 10 条

[1] INNERVATION DENSITY OF MECHANORECEPTIVE FIBERS SUPPLYING GLABROUS SKIN OF THE MONKEYS INDEX FINGER [J].

DARIANSMITH, I ;

KENINS, P .

JOURNAL OF PHYSIOLOGY-LONDON, 1980, 309 (DEC) :147-155

[2] TACTILE SENSIBILITY IN THE HUMAN HAND - RELATIVE AND ABSOLUTE DENSITIES OF 4 TYPES OF MECHANORECEPTIVE UNITS IN GLABROUS SKIN [J].

JOHANSSON, RS ;

VALLBO, AB .

JOURNAL OF PHYSIOLOGY-LONDON, 1979, 286 (JAN) :283-300

[3] NEURAL MECHANISMS OF TACTUAL FORM AND TEXTURE-PERCEPTION [J].

JOHNSON, KO ;

HSIAO, SS .

ANNUAL REVIEW OF NEUROSCIENCE, 1992, 15 :227-250

[4]

KEPPEL G, 1989, DESIGN ANAL RES HDB

[5]

Merzenich M M, 1993, J Hand Ther, V6, P89

[6] CONSISTENT FEATURES OF THE REPRESENTATION OF THE HAND IN AREA 3B OF MACAQUE MONKEYS [J].

PONS, TP ;

WALL, JT ;

GARRAGHTY, PE ;

CUSICK, CG ;

KAAS, JH .

SOMATOSENSORY RESEARCH, 1987, 4 (04) :309-331

[7] TACTILE SENSING OF SURFACE-FEATURES [J].

SATHIAN, K .

TRENDS IN NEUROSCIENCES, 1989, 12 (12) :513-519

[8] PERCEPTUAL ASYMMETRIES IN THE SOMATOSENSORY SYSTEM - A DICHHAPTIC EXPERIMENT AND CRITICAL-REVIEW OF THE LITERATURE FROM 1929 TO 1986 [J].

SUMMERS, DC ;

LEDERMAN, SJ .

CORTEX, 1990, 26 (02) :201-226

[9] A PSYCHOPHYSICAL STUDY OF THE MECHANISMS OF SENSORY RECOVERY FOLLOWING NERVE INJURY IN HUMANS [J].

VANBOVEN, RW ;

JOHNSON, KO .

BRAIN, 1994, 117 :149-167

[10] THE LIMIT OF TACTILE SPATIAL-RESOLUTION IN HUMANS - GRATING ORIENTATION DISCRIMINATION AT THE LIP, TONGUE, AND FINGER [J].

VANBOVEN, RW ;

JOHNSON, KO .

NEUROLOGY, 1994, 44 (12) :2361-2366