Dissociation between lexical and indexical processing during speech perception

Lexical and indexical cues in masking by competing speech.

Three experiments were conducted using the TVM sentences, a new set of stimuli for competing speech research. These open-set sentences incorporate a cue name that allows the experimenter to direct the listener's attention to a target sentence. The first experiment compared the relative efficacy of directing the listener's attention to the cue name versus instructing the subject to listen for a ...

Lexical representation explains cortical entrainment during speech perception

Results from a recent neuroimaging study on spoken sentence comprehension have been interpreted as evidence for cortical entrainment to hierarchical syntactic structure. We present a simple computational model that predicts the power spectra from this study, even though the model’s linguistic knowledge is restricted to the lexical level, and word-level representations are not combined into high...

Lexical contact during speech perception: A connectionist model

A connectionist architecture comprised of cell assemblies was developed and applied to the problem of speech perception at the phonemic and lexical levels. The problem addressed involved a disagreement amongst theorists over the possible sources of lexical priming effects. Speech was encoded in the model as the temporal activity of phoneme units that are connected to higher-level word assemblie...

Speech perception, well-formedness, and lexical frequency

Lexical and Sublexical Units in Speech Perception

Saffran, Newport, and Aslin (1996a) found that human infants are sensitive to statistical regularities corresponding to lexical units when hearing an artificial spoken language. Two sorts of segmentation strategies have been proposed to account for this early word-segmentation ability: bracketing strategies, in which infants are assumed to insert boundaries into continuous speech, and clusterin...