(C) 2009 Elsevier Ltd. All rights reserved.”
“We report the case of an English-speaking aphasic patient (JP) with left posterior-frontal damage affecting the inferior frontal and precentral gyri. In speaking, Sotrastaurin cost JP was impaired with the regular inflections of nouns and pseudonouns, making errors like “”pears”" instead of pear or “”door”" for doors, while the spoken production of noun stems and irregularly inflected nouns (teeth) was preserved. JP’s

noun inflection errors stemmed from problems with inflection selection rather than a lack of understanding of concept numerosity or phonological deficit. Evidence that inflection deficits occur independently of semantic and phonological impairments supports accounts that propose dedicated neural substrates for morphological processes and raises a challenge for connectionist models

that do not incorporate specific mechanisms for morphology. JP’s selleck chemicals results also demonstrated a lexical deficit selectively affecting the retrieval of verb stems and a more severe impairment for verb vs. noun inflections. JP’s verb production deficit suggests a close interaction between inflectional and lexical processes probably reflecting the fact that English inflection choice in part depends on stem information stored in the lexicon. (C) 2010 Elsevier Ltd. All rights reserved.”
“This paper considers the evolution of phenotypic traits in a community comprising the populations of predators buy HA-1077 and prey subject to Allee effect. The evolutionary model is constructed from a deterministic approximation of the stochastic process of mutation and selection. Firstly, we investigate the ecological and evolutionary conditions that allow for continuously stable strategy and evolutionary branching. We find that the strong Allee effect of prey facilitates the formation

of continuously stable strategy in the case that prey population undergoes evolutionary branching if the Allee effect of prey is not strong enough. Secondly, we show that evolutionary suicide is impossible for prey population when the intraspecific competition of prey is symmetric about the origin. However, evolutionary suicide can occur deterministically on prey population if prey individuals undergo strong asymmetric competition and are subject to Allee effect. Thirdly, we show that the evolutionary model with symmetric interactions admits a stable limit cycle if the Allee effect of prey is weak. Evolutionary cycle is a likely outcome of the process, which depends on the strength of Allee effect and the mutation rates of predators and prey. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.”
“Pure alexia (PA) is characterised by strong effects of word length on reading times and is sometimes accompanied by an overt letter-by-letter (LBL) reading strategy. Past studies have reported “”implicit recognition”" in some individual PA patients.