Sat, 05 Jul 2008 04:12:50 BST CiteULike: briordan semantic-degradation http://www.citeulike.org/user/briordan/tag/semantic-degradation CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/briordan/article/2878403 <i>Brain and Language, Vol. 106, No. 1. (July 2008), pp. 72-78.</i><br /><br />Allen [Allen, M. (2005). The preservation of verb subcategory knowledge in a spoken language comprehension deficit. Brain and Language, 95, 255-264.] reports a single patient, WBN, who, during spoken language comprehension, is still able to access some of the syntactic properties of verbs despite being unable to access some of their semantic properties. Allen claims that these findings challenge linguistic theories which assume that much of the syntactic behavior of verbs can be predicted from their meanings. I argue, however, that this conclusion is not supported by the data for two reasons: first, Allen focuses on aspects of verb syntax that are not claimed to be influenced by verb semantics; and second, he ignores aspects of verb syntax that are claimed to be influenced by verb semantics. A critique of Mark D. Allen's "The preservation of verb subcategory knowledge in a spoken language comprehension deficit" David Kemmerer doi:10.1016/j.bandl.2007.04.008 Brain and Language, Vol. 106, No. 1. (July 2008), pp. 72-78. 2008-06-10T01:07:47-00:00 2008 Brain and Language 106 1 72 78 noun-verb semantic-degradation semantic-organization word-meaning http://www.citeulike.org/user/briordan/article/2878324 <i>Cognitive Neuropsychology, Vol. 20, No. 3. (2003), pp. 451-486.</i><br /><br />Three theories currently compete to explain the conceptual deficits that result from brain damage: sensory-functional theory, domain-specific theory, and conceptual structure theory. We argue that all three theories capture important aspects of conceptual deficits, and offer different insights into their origins. Conceptual topography theory (CTT) integrates these insights, beginning with A. R. Damasio's (1989) convergence zone theory and elaborating it with the similarity-in-topography (SIT) principle. According to CTT, feature maps in sensory-motor systems represent the features of a category's exemplars. A hierarchical system of convergence zones then conjoins these features to form both property and category representations. According to the SIT principle, the proximity of two conjunctive neurons in a convergence zone increases with the similarity of the features they conjoin. As a result, conjunctive neurons become topographically organised into local regions that represent properties and categories. Depending on the level and location of a lesion in this system, a wide variety of deficits is possible. Consistent with the literature, these deficits range from the loss of a single category to the loss of multiple categories that share sensory-motor properties. The similarity-in-topography principle: Reconciling theories of conceptual deficits Kyle Simmons Lawrence Barsalou doi:10.1080/02643290342000032 Cognitive Neuropsychology, Vol. 20, No. 3. (2003), pp. 451-486. 2008-06-09T23:06:57-00:00 2003 Cognitive Neuropsychology 20 3 451 486 Psychology Press semantic-degradation semantic-features semantic-organization http://www.citeulike.org/user/briordan/article/2878318 <i>The Quarterly Journal of Experimental Psychology Section A, Vol. 57, No. 7. (2004), pp. 1153-1171.</i><br /><br />Many models of the processing of printed or spoken words or objects or faces propose that systems of local representations of the forms of such stimulilexiconsexist. This is denied by partisans of the distributed-representation connectionist approach to cognitive modelling. An experimental paradigm of key theoretical importance here is lexical decision and its analogue in the domain of objects, object decision. How does each theoretical camp account for our ability to perform these two tasks? The localists say that the tasks are done by matching or failing to match a stimulus to a local representation in a lexicon. Advocates of distributed representations often do not seek to explain these two tasks; however, when they do, they propose that patterns of activation evoked in a semantic system can be used to discriminate between words and nonwords, or between real objects and false objects. Therefore the distributed-representation account of lexical and object decision tasks predicts that performance on these tasks can never be normal in patients with an impaired semantic system, nor in patients who cannot access semantics normally from the stimulus domain being tested. However, numerous such patients have been reported in the literature, indicating that semantic access is not needed for normal performance on these tasks. Such results support the localist form of modelling rather than the distributed-representation approach. Are there lexicons? Max Coltheart doi:10.1080/02724980443000007 The Quarterly Journal of Experimental Psychology Section A, Vol. 57, No. 7. (2004), pp. 1153-1171. 2008-06-09T23:03:04-00:00 2004 The Quarterly Journal of Experimental Psychology Section A 57 7 1153 1171 Psychology Press models semantic-degradation semantic-features semantic-organization word-meaning http://www.citeulike.org/user/briordan/article/2878303 <i>(2006), pp. 403-453.</i> Semantic memory Beth Ober Gregory Shenaut (2006), pp. 403-453. 2008-06-09T22:45:57-00:00 2006 403 453 Elsevier semantic-degradation semantic-features semantic-measures semantic-organization semantic-priming word-meaning http://www.citeulike.org/user/briordan/article/2351819 <i>Neuropsychology, Vol. 17, No. 2. (2003), pp. 306-309.</i> Structure versus processing deficits in Alzheimer's disease, a matter of degree: A comment on Storms et al (2003) Keith Hutchison David Balota Neuropsychology, Vol. 17, No. 2. (2003), pp. 306-309. 2008-02-08T03:25:30-00:00 2003 Neuropsychology 17 2 306 309 semantic-degradation semantic-organization