Tactile perception of direction in relation to handedness and familial handedness

Varney, Nils R.; Benton, Arthur L.

doi:10.1016/0028-3932(75)90068-8

Cited by 143 publications

(46 citation statements)

References 9 publications

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“…To avoid possible handedness factors (Varney & Benton, 1975) in the perception of moving tactile stimuli, familial right-handed volunteer subjects from IPO were used in the experiment. All of the subjects indicated a strong-to-moderate right-handedness ac-cording to the criteria used by Varney and Benton (1975).…”

Section: Methods Subjectsmentioning

confidence: 99%

“…All of the subjects indicated a strong-to-moderate right-handedness ac-cording to the criteria used by Varney and Benton (1975). With participation based upon availability, 14 male subjects with normal or corrected-to-normal vision took part.…”

Section: Methods Subjectsmentioning

confidence: 99%

“…In their study using an electromechanical stimulator consisting of three steel rods, Varney and Benton (1975) asked their subjects to judge the direction of stimulation, which was either vertical, horizontal, or along either 45°diagonal. A main effect for handedness was found (p < .02), whereby 66% of right-handed subjects showed superior accuracy ofrecognition in the left hand, while 56% of the left-handed subjects showed superior accuracy of recognition in the right hand.…”

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confidence: 99%

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Directional sensitivity to a tactile point stimulus moving across the fingerpad

Keyson¹,

Houtsma²

1995

Perception & Psychophysics

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The ability of subjects to discriminate between directions of a point contact moving across the fingerpad was examined. Subjects were required to report, using an adaptive two-interval, twoalternative forced-choice procedure, whether in two sequential stimuli the direction of motion changed in a clockwise or counterclockwise direction. The overall mean orientation-change threshold across eight stimulus orientations was approximately 14°, with the lowest threshold for the point motion toward the wrist. This observed lower threshold in the distal-to-proximal direction is thought to be due to stretching of the skin at the tip of the fingernail, to which one may be particularly sensitive. For all orientations, thresholds were generally more uniform and higher than those reported on vibrotactile linear contactor arrays for horizontal and vertical orientations.Although little research has been reported on the thresholds for tactile angle discrimination of a moving point across the skin, several studies have examined tactile and haptic perception oforientation for static stimuli. In particular, the degree to which deviations can be detected from referent or standard vertical, horizontal, and diagonal orientations has been considered. However, a clear understanding of directional sensitivity for a single point contactor, as opposed to sensitivity for a static linear contactor array, is lacking. Furthermore, it is not clear how directional discrimination at opposite ends of the principal meridians may vary, given skin stretch by a single point. Thus the present study has two major objectives: (I) To estimate the degree to which subjects can discriminate the angle of a point contact moving across the right index finger; and (2) to determine how threshold levels vary with stimulus orientations in relation to a fixed finger position.Studies of nonmoving tactile and haptic line orientation perception suggest that an oblique effect (Appelle, 1972) occurs in the haptic and tactile modalities, whereby the discrimination of stimuli presented along or straight across the finger axis (i.e., in a vertical or a horizontal orientation, respectively) is superior to performance with stimuli in oblique orientations. Lechelt, Eliuk, and Tanne (1976) and Lechelt and Verenka (1980) first reported similar spatial asymmetries in the haptic modality as well as in visuallhaptic cross-modal judgments of stimulus orientations. Lechelt (1988) examined the tactile discrimination threshold for stimulus-orientation discrepancy from standard or referent vertical, horizontal, and diagonal reference orientations. The stimuli were vibrating linear displays presented to the pad of the right index finger via an Optacon (optical-to-tactile converter). The Optacon converted optical line images into a 6 X 24 tactile array using piezoelectric bimorph reeds vibrating at 230 Hz. Results indicated that deviations of2,5O and 5°, respectively, could be discriminated at the 75%-correct level from horizontal and vertical standards, whereas 15°d eviations were requir...

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Section: Methods Subjectsmentioning

confidence: 99%

Section: Methods Subjectsmentioning

confidence: 99%

mentioning

confidence: 99%

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Directional sensitivity to a tactile point stimulus moving across the fingerpad

Keyson¹,

Houtsma²

1995

Perception & Psychophysics

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“…All were neurologically normal and right-handed, as determined by means of the Benton Handedness Questionnaire. 4 All patients and control subjects signed written consent forms approved by our institutional review board.…”

Section: Methodsmentioning

confidence: 99%

Functional correlates of incoordination in patients with spinocerebellar ataxia 1: A preliminary fMRI study

Jayakumar

Desai

Pal

et al. 2008

Journal of Clinical Neuroscience

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“…The subjects ranged in age from 21 to 35 years, with a mean of 24 years. To control for handedness eOE ects (Varney and Benton 1975) only right-handed subjects were chosen. …”

Section: Subjectsmentioning

confidence: 99%

Dynamic cursor gain and tactual feedback in the capture of cursor movements

Keyson¹

1997

Ergonomics

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Recent research involving a trackball with force feedback has demonstrated that tactile feedback can enhance the acquisition of targets in graphical user interfaces in terms of movement times and errors. The present study seeks to explore the degree to which tactual feedback over a target, in contrast to changes in the display/control gain over the target, influences target acquisition performance. Tactual feedback over a target is felt as a pulling force towards the centre of a target, with a counterforce applied when moving out of the centre. Changes in the cursor gain can be used to create a cursor-catching effect by requiring more movement effort of the control device to leave than to enter the target centre, without increasing the total amount of effort to enter and leave the target area. User movement in entering a target is thus braked by the change in cursor gain. Results of an experiment indicated that target acquisition performance was generally higher in the tactual feedback condition, followed by cursor gain feedback, in comparison with no-cursor gain feedback. User interface design issues as related to gain feedback in visual interfaces and tactual feedback over targets are considered.

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Tactile perception of direction in relation to handedness and familial handedness

Cited by 143 publications

References 9 publications

Directional sensitivity to a tactile point stimulus moving across the fingerpad

Directional sensitivity to a tactile point stimulus moving across the fingerpad

Functional correlates of incoordination in patients with spinocerebellar ataxia 1: A preliminary fMRI study

Dynamic cursor gain and tactual feedback in the capture of cursor movements

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