Classification of primary progressive aphasia and its variants
This article provides a classification of primary progressive aphasia (PPA) and its 3 main variants to improve the uniformity of case reporting and the reliability of research results. Criteria for…
Sensitivity of revised diagnostic criteria for the behavioural variant of frontotemporal dementia.
- K. Rascovsky, J. Hodges, B. Miller
- Medicine, PsychologyBrain : a journal of neurology
- 1 September 2011
The revised criteria for behavioural variant frontotemporal dementia improve diagnostic accuracy compared with previously established criteria in a sample with known frontotmporal lobar degeneration and reflect the optimized diagnostic features, less restrictive exclusion features and a flexible structure that accommodates different initial clinical presentations.
Anatomy of Spatial Attention: Insights from Perfusion Imaging and Hemispatial Neglect in Acute Stroke
- A. Hillis, M. Newhart, J. Heidler, P. Barker, E. Herskovits, M. Degaonkar
- Biology, PsychologyJournal of Neuroscience
- 23 March 2005
The data show that neglect can be caused by hypoperfused dysfunctional tissue not detectable by structural magnetic resonance imaging, and different forms of neglect were associated with different sites of cortical hypoperFusion.
Lexical organization of nouns and verbs in the brain
The performance of two brain-damaged subjects with modality-specific deficits restricted principally to verbs in oral and written production suggests that grammatical-class distinctions are redundantly represented in the phonological and orthographic output lexical components.
The multiple semantics hypothesis: Multiple confusions?
Abstract In this paper we discuss the issue of multiple versus unitary semantics. We argue that the notion of multiple semantics (as currently articulated) does not, in fact, represent a theory of…
DTI tractography based parcellation of white matter: Application to the mid-sagittal morphology of corpus callosum
Where Do Semantic Errors Come From?
Aphasia: Progress in the last quarter of a century
- A. Hillis
- Psychology, BiologyNeurology
- 10 July 2007
Recovery from aphasia depends on restoration of tissue function or reorganization of the cognitive/neural network underlying language, which can be facilitated by a number of diverse interventions.
Category-specific naming and comprehension impairment: a double dissociation.
2 neurologically impaired patients with lesions involving primarily the left temporal lobe, whose production and comprehension of words in the semantic category of animals were disproportionately spared in 1 case and disproportionately impaired in the other, provides neurally based evidence for the view that lexical-semantic information is organized categorically.
Re-examining the brain regions crucial for orchestrating speech articulation.
- A. Hillis, M. Work, P. Barker, M. Jacobs, Elisabeth L. Breese, Kristin Maurer
- Psychology, BiologyBrain : a journal of neurology
- 1 July 2004
In patients with and without insular lesions, apraxia of speech was associated with structural damage or low blood flow in left posterior inferior frontal gyrus, and this results illustrate a potential limitation of lesion overlap studies, and illustrate an alternative method for identifying brain-behaviour relationships.