Spatial, tactile presentation of voice fundamental frequency as a supplement to lipreading: results of extended training with a single subject. 1988

A Boothroyd, and T Hnath-Chisolm
City University of New York, NY 10036.

An adult with a severe, postlingually-acquired, sensorineural, hearing loss was given 2 hours a week of training in the perception of connected discourse by lipreading, supplemented by voice fundamental frequency (Fo), encoded as locus of vibratory stimulation of the forearm. Three, 3-week blocks of training in the supplemented condition were interspersed with 1-week periods of training by lipreading alone. Training was conducted via a computer-controlled, interactive video system, using a semi-automated connected discourse tracking procedure. Performance was measured as the percentage of words correctly recognized on the first presentation of new sentence material. Scores by lipreading alone averaged approximately 65 percent and remained essentially constant over the 13 weeks of training. Scores under the supplemented condition rose from 65 percent at the beginning of the study to 85 percent at the end. The final supplemented score represented roughly a 50 percent reduction of error rate, when compared with lipreading alone. Performance with the tactile supplement was not as good as with auditorily presented Fo, but was better than has previously been reported in the literature. These data provide evidence to support the notion that subjects can learn to integrate novel tactile codes with the visual stimulus during the lipreading of connected speech.

UI MeSH Term Description Entries
D008085 Lipreading The process by which an observer comprehends speech by watching the movements of the speaker's lips without hearing the speaker's voice. Speechreading,Lip Reading,Lip Readings,Lipreadings,Reading, Lip,Readings, Lip,Speechreadings
D008297 Male Males
D003143 Communication Aids for Disabled Equipment that provides mentally or physically disabled persons with a means of communication. The aids include display boards, typewriters, cathode ray tubes, computers, and speech synthesizers. The output of such aids includes written words, artificial speech, language signs, Morse code, and pictures. Augmentative and Alternative Communications Systems,Communication Aids for Handicapped,Communication Boards,Speech Synthesizers,Telecommunications Devices for the Deaf,TDD,TTY Telephone,Text Telecommunication,Text Telecommunication Devices,Text Telephone,Communication Board,Speech Synthesizer,Synthesizer, Speech,Synthesizers, Speech,TTY Telephones,Telecommunication Device, Text,Telecommunication Devices, Text,Telecommunication, Text,Telecommunications, Text,Text Telecommunication Device,Text Telecommunications,Text Telephones
D005542 Forearm Part of the upper extremity in humans and primates extending from the ELBOW to the WRIST. Antebrachium,Antebrachiums,Forearms
D006319 Hearing Loss, Sensorineural Hearing loss resulting from damage to the COCHLEA and the sensorineural elements which lie internally beyond the oval and round windows. These elements include the AUDITORY NERVE and its connections in the BRAINSTEM. Deafness Neurosensory,Deafness, Neurosensory,Deafness, Sensoryneural,Neurosensory Deafness,Sensorineural Hearing Loss,Sensoryneural Deafness,Cochlear Hearing Loss,Hearing Loss, Cochlear,Deafnesses, Neurosensory,Deafnesses, Sensoryneural,Neurosensory Deafnesses,Sensoryneural Deafness,Sensoryneural Deafnesses
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D012656 Self-Help Devices Devices, not affixed to the body, designed to help persons having musculoskeletal or neuromuscular disabilities to perform activities involving movement. Assistive Devices,Assistive Technology,Assistive Device,Assistive Technologies,Device, Assistive,Device, Self-Help,Devices, Assistive,Devices, Self-Help,Self Help Devices,Self-Help Device,Technologies, Assistive,Technology, Assistive
D014110 Touch Sensation of making physical contact with objects, animate or inanimate. Tactile stimuli are detected by MECHANORECEPTORS in the skin and mucous membranes. Tactile Sense,Sense of Touch,Taction,Sense, Tactile,Senses, Tactile,Tactile Senses,Tactions,Touch Sense,Touch Senses
D014732 Vibration A continuing periodic change in displacement with respect to a fixed reference. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Vibrations

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