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Source: Neuropsychologia
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Total 127 results found since Jan 2013.
Right fronto-limbic atrophy is associated with reduced empathy in refractory unilateral mesial temporal lobe epilepsy
Publication date: Available online 9 September 2015 Source:Neuropsychologia Author(s): Gianina Toller, Babu Adhimoolam, Katherine P. Rankin, Hans-Jürgen Huppertz, Martin Kurthen, Hennric Jokeit Refractory mesial temporal lobe epilepsy (MTLE) is the most frequent focal epilepsy and is often accompanied by deficits in social cognition including emotion recognition, theory of mind, and empathy. Consistent with the neuronal networks that are crucial for normal social-cognitive processing, these impairments have been associated with functional changes in fronto-temporal regions. However, although atrophy in unilateral ...
Source: Neuropsychologia - September 9, 2015 Category: Neurology Source Type: research
Motor Imagery based Brain-Computer Interfaces: An Emerging Technology to Rehabilitate Motor Deficits
Publication date: Available online 14 September 2015 Source:Neuropsychologia Author(s): Alonso-Valerdi. Luz Maria, Salido-Ruiz Ricardo Antonio, Ramirez-Mendoza Ricardo A When the sensory-motor integration system is malfunctioning provokes a wide variety of neurological disorders, which in many cases cannot be treated with conventional medication, or via existing therapeutic technology. A brain-computer interface (BCI) is a tool that permits to reintegrate the sensory-motor loop, accessing directly to brain information. A potential, promising and quite investigated application of BCI has been in the motor rehabilitatio...
Source: Neuropsychologia - September 15, 2015 Category: Neurology Source Type: research
Motor imagery based brain–computer interfaces: An emerging technology to rehabilitate motor deficits
Publication date: Available online 14 September 2015 Source:Neuropsychologia Author(s): Luz Maria Alonso-Valerdi, Ricardo Antonio Salido-Ruiz, Ricardo A. Ramirez-Mendoza When the sensory–motor integration system is malfunctioning provokes a wide variety of neurological disorders, which in many cases cannot be treated with conventional medication, or via existing therapeutic technology. A brain–computer interface (BCI) is a tool that permits to reintegrate the sensory–motor loop, accessing directly to brain information. A potential, promising and quite investigated application of BCI has been in the motor rehabil...
Source: Neuropsychologia - September 29, 2015 Category: Neurology Source Type: research
Understanding the role of the primary somatosensory cortex: Opportunities for rehabilitation
Publication date: December 2015 Source:Neuropsychologia, Volume 79, Part B Author(s): M.R. Borich, S.M. Brodie, W.A. Gray, S. Ionta, L.A. Boyd Emerging evidence indicates impairments in somatosensory function may be a major contributor to motor dysfunction associated with neurologic injury or disorders. However, the neuroanatomical substrates underlying the connection between aberrant sensory input and ineffective motor output are still under investigation. The primary somatosensory cortex (S1) plays a critical role in processing afferent somatosensory input and contributes to the integration of sensory and motor si...
Source: Neuropsychologia - December 2, 2015 Category: Neurology Source Type: research
Lesion correlates of impairments in actual tool use following unilateral brain damage
This study employs Voxel Lesion Symptom Mapping to relate the functional impairment in actual tool use with extent and localization of the structural damage in the left (LBD, N=31) and right (RBD, N=19) hemisphere in chronic stroke patients. A series of 12 tools was presented to participants in a carousel. In addition, a non-tool condition tested the prescribed manipulation of a bar. The execution was scored according to an apraxic error scale based on the dimensions grasp, movement, direction and space. Results in the LBD group show that the ventro-dorsal stream constitutes the core of the defective network responsible fo...
Source: Neuropsychologia - February 19, 2016 Category: Neurology Source Type: research
Auditory lateralisation deficits in neglect patients
Publication date: Available online 23 March 2016 Source:Neuropsychologia Author(s): Alma Guilbert, Sylvain Clément, Latifa Senouci, Sylvain Pontzeele, Yves Martin, Christine Moroni Although visual deficits due to unilateral spatial neglect (USN) have been frequently described in the literature, fewer studies have been interested in directional hearing impairment in USN. The aim of this study was to explore sound lateralisation deficits in USN. Using a paradigm inspired by Tanaka et al. (1999), interaural time differences (ITD) were presented over headphones to give the illusion of a leftward or a rightward movemen...
Source: Neuropsychologia - March 23, 2016 Category: Neurology Source Type: research
Perceptual decisions regarding object manipulation are selectively impaired in apraxia or when tDCS is applied over the left IPL
This study evaluated whether apraxia can be understood as due to impaired motor representations or motor imagery necessary for appropriate object-use, imitation, and pantomime. The causal role of the left inferior parietal lobe (IPL), which is heavily implicated in apraxia, is also evaluated. These processes are appraised in light of the proposed ventro-dorsal sub-stream of the classic two visual pathway model, where perceptual information from the ventral stream and the dorsal action stream are integrated and essential for object manipulation. Using a task assessing object-use perception, stroke patients with apraxia demo...
Source: Neuropsychologia - April 22, 2016 Category: Neurology Source Type: research
Let the left brain know what the right brain does: Inter-hemispheric compensation of functional deficits after brain damage
Publication date: Available online 14 June 2016 Source:Neuropsychologia Author(s): Paolo Bartolomeo, Michel Thiebaut de Schotten Recent evidence revealed the importance of inter-hemispheric communication for the compensation of functional deficits after brain damage. This review summarises the biological consequences observed using histology as well as the longitudinal findings measured with magnetic resonance imaging methods in brain damaged animals and patients. In particular, we discuss the impact of post-stroke brain hyperactivity on functional recovery in relation to time. The reviewed evidence also suggests that ...
Source: Neuropsychologia - June 14, 2016 Category: Neurology Source Type: research
Let thy left brain know what thy right brain doeth: Inter-hemispheric compensation of functional deficits after brain damage
Publication date: Available online 14 June 2016 Source:Neuropsychologia Author(s): Paolo Bartolomeo, Michel Thiebaut de Schotten Recent evidence revealed the importance of inter-hemispheric communication for the compensation of functional deficits after brain damage. This review summarises the biological consequences observed using histology as well as the longitudinal findings measured with magnetic resonance imaging methods in brain damaged animals and patients. In particular, we discuss the impact of post-stroke brain hyperactivity on functional recovery in relation to time. The reviewed evidence also suggests that ...
Source: Neuropsychologia - June 21, 2016 Category: Neurology Source Type: research
Theta-band functional connectivity in the dorsal fronto-parietal network predicts goal-directed attention
Publication date: Available online 12 July 2016 Source:Neuropsychologia Author(s): Julia Fellrath, Anaïs Mottaz, Armin Schnider, Adrian G. Guggisberg, Radek Ptak Functional imaging studies have identified a dorsal fronto-parietal network whose activity reflects shifts of attention in space and is sensitive to the behavioural relevance of stimuli. In patients with severe deficits of spatial attention this network is often structurally preserved. Here, we show that resting-state EEG functional connectivity in the dorsal fronto-parietal network predicts impaired goal-directed processing in stroke patients with spatial...
Source: Neuropsychologia - July 13, 2016 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
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
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
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
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
