Outlines an approach for studying auditory levels in speech perception, focusing on the artificial speech understanding system that is most compatible with the experimental data obtained in speech perception research. (RL)

This paper reviews two models for auditory compensation attending visual loss--structural and strategic. The paper concludes that it is not clear to what extent differences in auditory processing represent variations in underlying capacity, the development of strategies, attentional activation, or multiple factors. Previous dismissals of…

Presents an acoustical model and evidence from four experiments that children with visual impairments use the buildup of low-frequency sound along walls to guide locomotion. The model differs from the concept of echolocation by emphasizing sound that is ambient, rather than self-produced, and of low frequency. (Author/CR)

Acetylcholine release in sensory neocortex contributes to higher-order sensory function, in part by activating nicotinic acetylcholine receptors (nAChRs). Molecular studies have revealed a bewildering array of nAChR subtypes and cellular actions; however, there is some consensus emerging about the major nAChR subtypes and their functions in…

Presents a language processing model that distinguishes four functional components of reading and listening: feature detection, primary recognition, secondary recognition, and rehearsal and recoding. Uses the model to describe and incorporate some recent research. (GT)

Research efforts to model speech perception in terms of a processing system in which knowledge and processing are distributed over large numbers of highly interactive--but computationally primative--elements are described in this report. After discussing the properties of speech that demand a parallel interactive processing system, the report…

The chapter examines audition and early intervention with hearing impaired infants, the normal development of audition, a model of auditory learning and teaching (involving discrimination, identification, comprehension, and detection), progression along the developmental sequence, natural interactions which aid learning, and parent role. (DB)

This paper reviews the research on speech perception and reassesses the contribution of innate capacities versus external stimulation in conjunction with age in first- and second-language acquisition. A developmental model of speech perception is then discussed in relation to neonatal auditory perception. (Contains 86 references.) (MDM)