Contact with a surface by means of a probe or tool generates considerable information about its texture. It is as though the tool becomes an extension of the hand, and we perceive the surface as if the hand were in direct contact with it (Katz, 1925/ Krueger, 1989). Despite the fact that this type of interaction with the environment underlies such diverse activities as the use of canes by the blind, the manipulation of surgical instruments, and receiving feedback from prosthetic hands, relatively little is known about the perception of texture information via a probe and about its neural basis. In the proposed research, we will examine the perceptual information available by direct contact with textured surfaces (that is, with the bare finger) and contrast it to that available through contact with a probe. The approach will consist in pairing human psychophysical studies with neural recordings from non-human primates. There are two stages in this program of research, 1) in a set of psychophysical experiments, we will use real textures as stimuli to examine the dimensions of human texture perception, 2) we will create simulated textures from the vibratory signals generated in probes as they are scanned across the textured surface and will relate the responses of peripheral and cortical neurons to the probe-mediated textural percepts evoked by these texture-elicited vibrations. The use of identical stimuli in many of the psychophysical, peripheral, and cortical studies will allow us to directly correlate the data obtained from these studies. Both psychophysical results and neurophysiological data obtained from the use of non-human primates might prove valuable for clinical diagnosis when the normal control data are needed to compare with those from the patients who have peripheral or central nerve injuries. The results of the proposed studies have important implications for designing haptic interfaces such as remote tools used in laparoscopic surgery and tele-surgery.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Research Project (R01)
Project #
5R01NS054180-04
Application #
7761686
Study Section
Somatosensory and Chemosensory Systems Study Section (SCS)
Program Officer
Gnadt, James W
Project Start
2007-05-01
Project End
2012-02-28
Budget Start
2010-03-01
Budget End
2012-02-28
Support Year
4
Fiscal Year
2010
Total Cost
$353,003
Indirect Cost
Name
Johns Hopkins University
Department
Neurosciences
Type
Schools of Arts and Sciences
DUNS #
001910777
City
Baltimore
State
MD
Country
United States
Zip Code
21218
Yoshioka, Takashi; Dillon, Moira R; Beck, Graham C et al. (2013) Tactile localization on digits and hand: structure and development. Psychol Sci 24:1653-63
Yoshioka, Takashi; Craig, James C; Beck, Graham C et al. (2011) Perceptual constancy of texture roughness in the tactile system. J Neurosci 31:17603-11
Yoshioka, Takashi; Zhou, Julia (2009) Factors Involved in Tactile Texture Perception through Probes. Adv Robot 23:747-766
Hua, Kegang; Oishi, Kenichi; Zhang, Jiangyang et al. (2009) Mapping of functional areas in the human cortex based on connectivity through association fibers. Cereb Cortex 19:1889-95
Yoshioka, T; Bensmaia, S J; Craig, J C et al. (2007) Texture perception through direct and indirect touch: an analysis of perceptual space for tactile textures in two modes of exploration. Somatosens Mot Res 24:53-70