Filtered By:
Source: Neuropsychologia
This page shows you your search results in order of date. This is page number 5.
Order by Relevance | Date
Total 127 results found since Jan 2013.
Semantic control deficits impair understanding of thematic relationships more than object identity
Publication date: Available online 11 August 2017 Source:Neuropsychologia Author(s): Hannah Thompson, James Davey, Paul Hoffman, Glyn Hallam, Rebecca Kosinski, Sarah Howkins, Emma Wooffindin, Rebecca Gabbitas, Elizabeth Jefferies Recent work has suggested a potential link between the neurocognitive mechanisms supporting the retrieval of events and thematic associations (i.e., knowledge about how concepts relate in a meaningful context) and semantic control processes that support the capacity to shape retrieval to suit the circumstances. Thematic associations and events are inherently flexible: the meaning of an item chang...
Source: Neuropsychologia - August 11, 2017 Category: Neurology Source Type: research
Reshaping the brain after stroke: the effect of prismatic adaptation in patients with right brain damage
Publication date: Available online 4 August 2017 Source:Neuropsychologia Author(s): Sonia Crottaz-Herbette, Eleonora Fornari, Michael P. Notter, Claire Bindschaedler, Laura Manzoni, Stephanie Clarke Prismatic adaptation has been repeatedly reported to alleviate neglect symptoms; in normal subjects, it was shown to enhance the representation of the left visual space within the left inferior parietal cortex. Our study aimed to determine in humans whether similar compensatory mechanisms underlie the beneficial effect of prismatic adaptation in neglect. Fifteen patients with right hemispheric lesions and 11 age-matched contro...
Source: Neuropsychologia - August 7, 2017 Category: Neurology Source Type: research
The anatomy of apathy: a neurocognitive framework for amotivated behavior
Publication date: Available online 8 July 2017 Source:Neuropsychologia Author(s): C. Le Heron, M.A.J. Apps., M. Husain Apathy is a debilitating syndrome associated with many neurological disorders, including several common neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease, and focal lesion syndromes such as stroke. Here, we review neuroimaging studies to identify anatomical correlates of apathy, across brain disorders. Our analysis reveals that apathy is strongly associated with disruption particularly of dorsal anterior cingulate cortex (dACC), ventral striatum (VS) and connected brain region...
Source: Neuropsychologia - July 8, 2017 Category: Neurology Source Type: research
A systematic investigation of navigation impairment in chronic stroke patients: Evidence for three distinct types
Conclusions The current study provides the first empirical support for the distinction between landmark-based, location-based, and path-based navigation impairment. Future research relying on other assessment instruments of navigation ability might be helpful to further validate this distinction.
Source: Neuropsychologia - July 4, 2017 Category: Neurology Source Type: research
Top-down modulation of early print-tuned neural activity in reading
Publication date: Available online 30 May 2017 Source:Neuropsychologia Author(s): Fang Wang, Urs Maurer Fast neural tuning to print has been found within the first 250ms of stimulus processing across different writing systems, indicated by larger N1 negativity in the ERP to words (or characters) compared to control stimuli, such as symbols. However, whether print tuning effects can be modulated by task demands at early stages of visual word recognition is still under debate. To further explore this issue, an ERP study in Chinese was conducted. Familiar, high-frequency, left/right-structured Chinese characters and unfamili...
Source: Neuropsychologia - May 31, 2017 Category: Neurology Source Type: research
Reading the Mind in the Touch: Neurophysiological Specificity in the Communication of Emotions by Touch
We examined the specificity of emotions elicited by touch delivered at CT-optimal (3cm/s) and CT-suboptimal (18cm/s) velocities (Experiment 1) at different body sites which contain (forearm) vs. do not contain (palm of the hand) CT fibres (Experiment 2). Blindfolded participants were touched without any contextual cues, and were asked to identify the touch provider's emotion and intention. Overall, CT-optimal touch (slow, gentle touch on the forearm) was significantly more likely than other types of touch to convey arousal, lust or desire. Affiliative emotions such as love and related intentions such as social support were...
Source: Neuropsychologia - May 30, 2017 Category: Neurology Source Type: research
Deficit in feature-based attention following a left thalamic lesion
Publication date: Available online 23 May 2017 Source:Neuropsychologia Author(s): Sofia Finsterwalder, Nele Demeyere, Celine R. Gillebert Selective attention enables us to prioritise the processing of relevant over irrelevant information. The model of priority maps with stored attention weights provides a conceptual framework that accounts for the visual prioritisation mechanism of selective attention. According to this model, high attention weights can be assigned to spatial locations, features, or objects. Converging evidence from neuroimaging and neuropsychological studies propose the involvement of thalamic and fronto...
Source: Neuropsychologia - May 24, 2017 Category: Neurology Source Type: research
Selective associative phonagnosia after right anterior temporal stroke
We report the case of a 48 year old men who developed a selective impairment in famous voice recognition after ischemic stroke in right subcortical structures (lenticular nucleus and head of the caudate) and right anterior temporal lobe. He underwent fibrinolytic treatment. During the following days he progressively recovered and was discharged without neurological focal sign. Patent foramen ovale was found. When he got back to his house he noticed that he was unable to recognize the voice of his favoured singers and needed to ask who was the singer to his relatives. Neuropsychological examination revealed a selective impa...
Source: Neuropsychologia - May 13, 2017 Category: Neurology Source Type: research
Structural connectivity subserving verbal fluency revealed by lesion-behavior mapping in stroke patients
Publication date: Available online 8 May 2017 Source:Neuropsychologia Author(s): Mingyang Li, Yumei Zhang, Luping Song, Ruiwang Huang, Junhua Ding, Yuxing Fang, Yangwen Xu, Zaizhu Han Tests of verbal fluency have been widely used to assess the cognitive functioning of persons, and are typically classified into two categories (semantic and phonological fluency). While widely-distributed divergent and convergent brain regions have been found to be involved in semantic and phonological fluency, the anatomical connectivity underlying the fluency is not well understood. The present study aims to construct a comprehensive white...
Source: Neuropsychologia - May 10, 2017 Category: Neurology Source Type: research
The effect of cortical and subcortical lesions on spontaneous expression of memory-encoded and emotionally infused information: Evidence for a role of the ventral stream
Publication date: Available online 8 May 2017 Source:Neuropsychologia Author(s): Efthymia Efthymiopoulou, Dimitrios S. Kasselimis, Apostolia Ghika, Andreas Kyrozis, Christos Peppas, Ioannis Evdokimidis, Michael Petrides, Constantin Potagas The ventral stream of language processing has been implicated in the spontaneous expression of memory-encoded and emotionally infused information. The present study investigated whether left hemispheric lesions in post-stroke right-handed aphasic patients may be selectively associated with specific language functions. Speech rate was assessed with two tasks, one based on autobiographica...
Source: Neuropsychologia - May 10, 2017 Category: Neurology Source Type: research
Bilingualism delays the onset of behavioral but not aphasic forms of frontotemporal dementia
Publication date: May 2017 Source:Neuropsychologia, Volume 99 Author(s): Suvarna Alladi, Thomas H. Bak, Mekala Shailaja, Divyaraj Gollahalli, Amuya Rajan, Bapiraju Surampudi, Michael Hornberger, Vasanta Duggirala, Jaydip Ray Chaudhuri, Subhash Kaul Bilingualism has been found to delay onset of dementia and this has been attributed to an advantage in executive control in bilinguals. However, the relationship between bilingualism and cognition is complex, with costs as well as benefits to language functions. To further explore the cognitive consequences of bilingualism, the study used Frontotemporal dementia (FTD) syndromes...
Source: Neuropsychologia - March 20, 2017 Category: Neurology Source Type: research
Bilingualism delays the onset of behavioural but not aphasic forms of Frontotemporal Dementia
Publication date: Available online 18 March 2017 Source:Neuropsychologia Author(s): Suvarna Alladi, Thomas H. Bak, Mekala Shailaja, Divyaraj Gollahalli, Amuya Rajan, Bapiraju Surampudi, Michael Hornberger, Vasanta Duggirala, Jaydip Ray Chaudhuri, Subhash Kaul Bilingualism has been found to delay onset of dementia and this has been attributed to an advantage in executive control in bilinguals. However, the relationship between bilingualism and cognition is complex, with costs as well as benefits to language functions. To further explore the cognitive consequences of bilingualism, the study used Frontotemporal dementia (FTD...
Source: Neuropsychologia - March 17, 2017 Category: Neurology Source Type: research
Are semantic and phonological fluency based on the same or distinct sets of cognitive processes? Insights from factor analyses in healthy adults and stroke patients
In this study, we therefore applied a German version of the verbal fluency task with 8 semantic (i.e. categories) and 8 phonological items (i.e. letters). An exploratory factor analysis with oblique rotation in N = 69 healthy young adults indeed revealed a two-factor solution with markedly different loadings for semantic and phonological items. This pattern was corroborated by a confirmatory factor analysis in a sample of N = 174 stroke patients. As results from both samples also revealed a substantial portion of common variance between the semantic and phonological factor, the present data further demonstrate that semanti...
Source: Neuropsychologia - February 28, 2017 Category: Neurology Source Type: research
Body Schema Plasticity after Stroke: Subjective and Neurophysiological Correlates of the Rubber Hand Illusion
Publication date: Available online 8 January 2017 Source:Neuropsychologia Author(s): Roberto Llorens, Adrián Borrego, Priscila Palomo, Ausiàs Cebolla, Enrique Noé, Sergi Bermúdez i Badia, Rosa Baños Stroke can lead to motor impairments that can affect the body structure and restraint mobility. We hypothesize that brain lesions and their motor sequelae can distort the body schema, a sensorimotor map of body parts and elements in the peripersonal space through which human beings embody the reachable space and ready the body for forthcoming movements. Two main constructs have been identified in the embodiment mechanism:...
Source: Neuropsychologia - January 7, 2017 Category: Neurology Source Type: research
Functional modulation of contralateral bias in early and object-selective areas after stroke of the occipital ventral cortices
Publication date: Available online 9 December 2016 Source:Neuropsychologia Author(s): Maren Praß, Cathleen Grimsen, Manfred Fahle Object agnosia is a rare symptom, occurring mainly after bilateral damage of the ventral visual cortex. Most patients suffering from unilateral ventral lesions are clinically non-agnosic. Here, we studied the effect of unilateral occipito-temporal lesions on object categorization and its underlying neural correlates in visual areas. Thirteen non-agnosic stroke patients and twelve control subjects performed an event-related rapid object categorization task in the fMRI scanner where images were ...
Source: Neuropsychologia - December 8, 2016 Category: Neurology Source Type: research
