Although the results from a number of studies of the performance of multichannel tactile aids for speech perception have suggested that such devices might provide more benefit to hearing-impaired persons than single-channel tactile aids (3,4), recent studies involving direct comparisons of multichannel and single-channel vibrotactile aids (5,6) indicated otherwise. In fact, for some types of sp...

Temporal frequency is a fundamental sensory dimension in audition and touch. In audition, analysis of temporal frequency is necessary for speech and music perception; in touch, the spectral analysis of vibratory signals has been implicated in texture perception and in sensing the environment through tools. Environmental oscillations impinging upon the ear are generally thought to be processed i...

BACKGROUND AND PURPOSE Deficits in tactile perception are common in patients with PD. However, the neural mechanisms have not been previously reported in the early stages. This study aims to investigate how the brain activity and connectivity changed under tactile perception at early Parkinsonian state by using functional MR imaging. MATERIALS AND METHODS Twenty-one patients with early PD and...

We have observed that passive tactile spatial acuity, the ability to resolve the spatial structure of surfaces pressed upon the skin, differs subtly but consistently between the sexes, with women able to perceive finer surface detail than men. Eschewing complex central explanations, we hypothesized that this sex difference in somatosensory perception might result from simple physical difference...

AIM To investigate tactile perception and manual dexterity, with or without visual feedback, in males with Duchenne muscular dystrophy (DMD). METHOD Forty males with DMD (mean age 9 y 8 mo, SD 2 y 3 mo; range 5-14 y), recruited from the teaching hospital of the School of Medicine of the University of São Paulo, with disease severity graded as '1' to '6' on the Vignos Scale and '1' on Brooke's...

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and sighted participants and its implications for tactile map creation. ABSTRACT Objective: To determine the optimal elevation of tactile map symbols. Background: Tactile perception research predicts that symbol elevation (vertical height) and texture on tactile maps could influence their readability. However, while research has shown that elevation influences detection and discrimination thres...

BACKGROUND For many years, and especially since Waynbaum and Wallon, psychology and psychopathology have dealt with cognitive perception, but have had little to do with the affective qualities of perception. Our aim was to study the influence of the sensory environment on people with autism. METHOD Several experiments were carried out using different forms of tactile stimulation (passive and ...

This paper proposes a kinesthetic–tactile fusion feedback system based on virtual interaction. Combining the results of human fingertip deformation characteristics analysis and an upper limb motion mechanism, tactile device arm kinesthetic are designed analyzed for blind instructors. In order to verify effectiveness method, touch experiments established through mapping relationship between mast...

A choice-based conjoint study was conducted sampling 400 individuals to determine their preference for Soft Touch and raised tactile coatings, which are sometimes called Hi Rise or profile coatings. Soft Touch coatings have a velvety, warm feel to them, and Hi Rise coatings simulate embossing with a glossy appearance to them. Both are considered tactile coatings, engaging the sense of touch. De...