What is the main point behind the motor theory of speech perception?
What is the main point behind the motor theory of speech perception?
The motor theory of speech perception is the hypothesis that people perceive spoken words by identifying the vocal tract gestures with which they are pronounced rather than by identifying the sound patterns that speech generates.
What evidence provides strong support of motor theory of speech?
There are fundamentally three kinds of evidence that have been viewed as favoring a motor theory of speech per ception (Lane, 1965): (a) when diverse perceptual responses are evoked by a set of acoustically similar speech signals produced by diverse patterns of articulation; (b) when similar perceptual responses are …
How does the Motor Theory explain the McGurk effect?
The Motor Theory postulates that the gesture intended by the speaker is the object of the perception. The object is not the acoustical signal produced. The theory explains this by also postulating a psychological gesture recognition module. Thus the McGurk effect constitutes strong evidence for the Motor Theory.
What is Motor Theory in psychology?
the view that speech perception relies on the processes that are used in speech production, such that listeners interpret a spoken message by nonconsciously computing what motor operations would be required to produce that sequence of sounds.
What is the trace model of speech perception?
TRACE is a connectionist model of speech perception, proposed by James McClelland and Jeffrey Elman in 1986. TRACE was made into a working computer program for running perceptual simulations. These simulations are predictions about how a human mind/brain processes speech sounds and words as they are heard in real time.
What is categorical perception of speech sounds?
“Categorical perception” (CP) corresponds to the extent to which acoustic differences between variants of the same phoneme are less perceptible than differences of the same acoustic magnitude between two different phonemes (Liberman, Harris, Hoffman & Griffith, 1957).
What are the two theories of hearing?
The ear-brain system is a complex instrument. Currently there are two overlapping theories of how we hear; the place theory of hearing and the temporal theory of hearing.
What happens to the motor theory of perception when the motor system is damaged?
Here we review neuropsychological evidence from patients with damage to the motor system, in the context of motor theories of perception applied to both manual actions and speech. Motor theories of perception predict that patients with motor impairments will have impairments for action recognition.
What is the McGurk effect and why is it important?
The McGurk effect occurs when there is a conflict between visual speech, meaning the movements of someone’s mouth and lips, and auditory speech, which are the sounds a person hears. And it can result in the perception of an entirely different message.
What are the motor control theories?
Motor Control Theories include the production of reflexive, automatic, adaptive, and voluntary movements and the performance of efficient, coordinated, goal-directed movement patterns which involve multiple body systems (input, output, and central processing) and multiple levels within the nervous system.
What is motor learning theory?
Motor learning theory emphasizes that skills are acquired using specific strategies and are refined through a great deal of repetition and the transfer of skills to other tasks (Croce & DePaepe, 1989). Exner and Henderson (1995) provide an overview of motor learning relative to hand skills in children.
How is categorical perception measured?
The study of categorical perception often uses experiments involving discrimination and identification tasks in order to categorize participants’ perceptions of sounds. Voice onset time (VOT) is measured along a continuum rather than a binary.
Are there any specific models of speech perception?
Models of Speech Perception There are many models of speech perception. There is not one specific model that is generally accepted. Three influential models being discussed are the motor theory, the cued based approach, and the TRACE model.
How is speech perception dependent on acoustic patterns?
Speech perception is not dependent on the extraction of simple invariant acoustic patterns in the speech waveform. The sound’s acoustic pattern is complex and greatly varies.
Are there trading relations between speech and non speech?
Evidence has shown that trading relations can be found for stimuli that have some speech like properties but are not actually perceived as speech. The reality that trading relations differ depending on whether stimuli are perceived as speech or non-speech, provides great support for the concept of a speech mode of perception (Moore, 1997).
Which is the smallest unit of speech perception?
According to Fant (1973), speech perception is a process consisting of both successive and concurrent identification on a series of progressively more abstract levels of linguistic structure. Phonemes are the smallest unit of sound.
