Download PDF by Harold Goodglass, Arthur Wingfield: Anomia: neuroanatomical and cognitive correlates

By Harold Goodglass, Arthur Wingfield

ISBN-10: 0080527272

ISBN-13: 9780080527277

ISBN-10: 0122896858

ISBN-13: 9780122896859

Anomia is the shortcoming to entry spoken names for gadgets, almost always linked to the aged or people with mind harm to the left hemisphere. Anomia bargains the state of the art assessment of problems of naming, written via said specialists from all over the world, approached from either scientific and theoretical viewpoints. Goodglass, recognized around the globe for his learn in aphasia and speech pathology, edits Read more...

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The acoustic input to speech perception is clearly a continuum, yet the behavioral translation of the speech sound continuum is typically cat- 2. Models of Naming 53 egorical (Kluender, 1994). , Saffran, Schwartz, & Marin, 1976). It is perhaps in such a more peripheral and hence transparent domain that direct evidence for or against the existence of cognitive nodes will be forthcoming. It should be noted that Stone and Van Orden (Stone & Van Orden, 1989) have specifically questioned the independent existence of nodes or units (in semantics in particular), arguing instead for what they term afunctional unitization; that is, the emergence of unitary behavior from processing dynamics that tie a number of subsymbolic components of representations into functional, symbolic, wholes (see also Stone & Van Orden, 1994).

Goodglass, Barton, & Kaplan, 1968). However, a disconnection of multiple inputs to a phonologic output system could give similar results. , Goodglass & Baker, 1976). , 1996) can be recast as a debate about the importance of two different pathways in naming: one, involving direct sensory system-to-phonologic output connections; the other, with an intervening semantic stage. , Goodglass, 1993) accept the possibility of direct sensory-to-phonologic connections (as will be noted below), the issue seems very hard to resolve with current experimental tools.

The greater the frequency, the higher the resting activation level of that node. ) d. Input from the prior stage can add activation to a node. The amount of added activation depends upon how closely the input matches what the node represents. e. The dynamics of activation are generally assumed to be noninstantaneous. Activation in response to even a single pulse input builds up over time. However, this buildup does not go on indefinitely. For many reasons, including avoidance of "heat death" and network stability, it is often assumed that the growth of activity in a node obeys a sigmoid curve: slow at low levels of input, faster at higher levels, and saturating at still higher levels (see Figure 4).

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Anomia: neuroanatomical and cognitive correlates by Harold Goodglass, Arthur Wingfield

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