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ERIC Number: EJ993781
Record Type: Journal
Publication Date: 2012-Oct
Pages: 13
Abstractor: As Provided
Reference Count: 56
ISSN: ISSN-0096-1523
Haptic Distal Spatial Perception Mediated by Strings: Point of Closest Approach and Bypass Distance
Cabe, Patrick A.; Hofman, L. Leigh
Journal of Experimental Psychology: Human Perception and Performance, v38 n5 p1328-1340 Oct 2012
Four experiments examined haptic perception of two distal spatial properties in a bypass event. A hook suspended a string held taut between the participant's finger and a weight. Moving their fingers laterally beneath the hook, participants estimated the finger's point of closest approach (PCA) to the hook and bypass distance (BPD; i.e., hook height above the finger's track at PCA). Experiment 1 yielded near perfect PCA estimates (group average r greater than 0.99), independent of BPD and traverse distance. Experiment 2 replicated PCA results, and showed good BPD estimates (group r = 0.74). BPD estimates depended on lateral movement distance to PCA, but not weight. In Experiment 3, feedback on accuracy improved BPD estimates (maximum group average R = 0.91). Magnitude estimation of BPD in Experiment 4 yielded a power law relationship (group average r = 0.90; exponent, 0.30). Results show that human perceivers can make effective judgments of PCA and BPD using haptically available force relationships. Results are interpreted in terms of haptics as a telemodality, the Gibsonian perceptual research program, and dynamic touch. (Contains 5 figures and 2 footnotes.)
American Psychological Association. Journals Department, 750 First Street NE, Washington, DC 20002-4242. Tel: 800-374-2721; Tel: 202-336-5510; Fax: 202-336-5502; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: North Carolina