title: Haptic roughness perception of linear gratings via bare finger or rigid probe.
abstract: The magnitude of perceived roughness was haptically estimated as subjects freely explored linear gratings with either the bare finger or a rigid stylus-shaped probe. A considerably expanded range of ridge and groove width was investigated, relative to the extant literature. The four experiments collectively indicate that, for both finger and probe-end effectors, the variance in the estimates of perceived roughness was predominantly predicted by a single parameter: groove width. The functions relating perceived roughness to groove width increased over a narrow band relative to the full range of values, then flattened. These data have archival values for models of roughness perception involving both direct and indirect touch.
authors.affiliation: Department of Psychology, Queen's University, Kingston, ON K7L 3N6, Canada.
authors.forename: Michael A
authors.initials: MA
authors.lastname: Lawrence
authors.forename: Ryo
authors.initials: R
authors.lastname: Kitada
authors.forename: Roberta L
authors.initials: RL
authors.lastname: Klatzky
authors.forename: Susan J
authors.initials: SJ
authors.lastname: Lederman
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D004056:Differential Threshold / Q000502:physiology*; D004192:Discrimination, Psychological / Q000502:physiology*; D005260:Female; D005385:Fingers; D017276:Friction; D006801:Humans; D008297:Male; D010465:Perception / Q000502:physiology*; D010812:Physical Stimulation; D012684:Sensory Thresholds / Q000502:physiology*; D014110:Touch / Q000502:physiology*