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2 edition of Neural mechanisms of spatial neglect. found in the catalog.

Neural mechanisms of spatial neglect.

G. Rizzolatti

Neural mechanisms of spatial neglect.

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Published .
Written in English


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ContributionsGoodrich, S.
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Open LibraryOL17465970M


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Neural mechanisms of spatial neglect. by G. Rizzolatti Download PDF EPUB FB2

Stefan Van der Stigchel, Tanja C.W. Nijboer, in Neuropsychology of Space, Problems With the Attentional Explanation of Spatial Neglect: A New Theory. Although spatial neglect has been generally explained as an attentional deficit (Kinsbourne, ; Mesulam, ), it is becoming increasingly evident that the concept of attention is not sufficient to explain all of the.

Hemispatial Neglect, Neural Basis of spatial neglect in acu te This hybrid view of attention provides insight into the mechanisms underlying neglect dyslexia and bears on the role of. Different mechanisms and neural representations of space have been offered to explain parietal neglect.

The first series of chapters consider two main themes in parietal research: first, characterization of parietal lobe impairments in spatial learning; and secondly, the potential neuronal mechanisms underlying the parietal representation of : M. Good. Hemispatial neglect is a neuropsychological condition in which, after damage to one hemisphere of the brain is sustained, a deficit in attention to and awareness of one side of the field of vision is observed.

It is defined by the inability of a person to process and perceive stimuli on one side of the body or environment, where that inability is not due to a lack of lty: Psychiatry, Neurology. Spatial neglect is a disorder of space-related behaviour. As well as being a fascinating clinical phenomenon, the study of spatial neglect helps us to understand normal mechanisms of directing and maintaining spatial attention.

The Cognitive and Neural Bases of Spatial Neglect provides an overview of this wide-ranging field of scientific endeavour, providing a cohesive synthesis of. The neural mechanisms of attentional control The neural mechanisms of attentional control Chapter: (p) (p) The neural mechanisms of attentional control Source: The Cognitive and Neural Bases of Spatial Neglect Author(s): Barry Giesbrecht George R.

Mangun Publisher: Oxford University Press. Hemispatial neglect is a common disabling disorder following right-hemisphere stroke. Although much work has focused on the lateralized components of neglect, recent investigations have also Author: Masud Husain. Spatial neglect is a disorder of space-related behaviour.

It is characterized by failure to explore the side of space contralateral to a brain lesion, or to react or respond to stimuli or subjects located on this side.

Research on spatial neglect and 5/5(1). The neural mechanisms of attentional control; Two neural systems for visual orienting and the pathophysiology of unilateral spatial neglect; Mapping spatial attention with reaction time in neglect patients; Spatial extinction and its relation to mechanisms of normal attention; Unconscious processing in neglect.

If spatial, temporal, and numeral representations share a neural substrate in the posterior parietal cortex, and if visual responses on these areas are strongly affected by saccadic eye movement, then saccades should interfere in similar ways with the perception of all three perceptual attributes: space, time, and number.

Overall, the egocentric spatial deficit in neglect reflects impairments in a set of related mechanisms for spatial attention, salience, and VSTM, and perhaps spatial cognition. A recent study has shown that this deficit, when assessed using even a very simple task, is highly associated with clinical judgments of by: The Cognitive and Neural Bases of Spatial Neglect Edited by Hans-Otto Karnath, A.

David Milner, and Giuseppe Vallar. Provides an up-to-date synthesis of the most recent advances in the field. With contributions from the foremost international experts on spatial neglect. ISBN: OCLC Number: Description: xiv, pages: illustrations ; 25 cm. Contents: Spatial neglect / Kenneth M.

Heilman, Robert T. Watson, and Edward Valenstein --Functional anatomy of attention and neglect: from neurons to networks / Marsel Mesulam --Neglect in monkeys: effect of permanent and reversible lesions / Claire. Introduction. The syndrome of spatial neglect is relatively common. Several pathological processes may cause it, including neurodegenerative disease,1, 2 neoplasia3 and trauma,4 although it is most common in the context of hemispheric stroke.5 Because of its implications for the understanding of the perception and representation of space, neglect has been of.

Neural Mechanisms of Spatial Neglect. Neglect is associated with damage to any one of a number of structures in the frontal and parietal cortices, as well as with damage to the temporal-parietal junction, medial temporal, and subcortical sites, and white matter underlying fronto-parietal cortices (Doricchi and Tomaiuolo, ; Bartolomeo et al.,; Doricchi Cited by: Unilateral spatial neglect is a common neurological syndrome following predominantly right hemisphere injuries and is characterized by both spatial and non-spatial deficits.

Core spatial deficits involve mechanisms for saliency coding, spatial attention, and short-term memory and occur in conjunction with nonspatial deficits that involve reorienting, target detection, and Cited by:   The Cognitive and Neural Bases of Spatial Neglect The Cognitive and Neural Bases of Spatial Neglect Jellinger, K.

Hans‐Otto Karpath, David A. Milner and Giuseppe Vallar, eds, Oxford University Press, Oxford,pp, Hardback, UK£ISBN 0‐19‐‐6 Spatial neglect is a disorder of space‐related behaviour, characterized by. The syndrome of spatial neglect is typically associated with focal injury to the temporoparietal or ventral frontal cortex.

This syndrome shows spontaneous partial recovery, but the neural basis. Prism adaptation is a sensory-motor adaptation that occurs after the visual field has been artificially shifted laterally or vertically. It was first introduced by Hermann von Helmholtz in late 19th-century Germany as supportive evidence for his perceptual learning theory (Helmholtz, /).

Since its discovery, prism adaptation has been suggested to improve spatial. We are especially interested in neural mechanisms that support spatial representations above and below the level of spatial awareness (Kim & Robertson, ) as well as explicit attention to objects and space (Schendel, Robertson & Treisman, ; List, Schumacher, D'Esposito & Robertson, submitted).

Edited by Hans-Otto Karnath, David Milner, and Giuseppe Vallar. Published by Oxford University Press, Oxford,pp£ ISBN This edited book represents the state of the art in research on spatial neglect and related disorders.

Since the pioneering work of Edoardo Bisiach (Italy) and Kenneth Heilman (USA) in the s, there has Cited by: 8. ISBN: OCLC Number: Description: xiii, pages: illustrations: Contents: 1. The History and Clinical Presentation of Neglect / Peter W.

Halligan and John C. Marshall The Anatomical Basis of Spatial Hemineglect in Humans / Giuseppe Vallar Orientational Bias Model of Unilateral Neglect:. Mirror neuron system(MNS) based therapy has been employed to treat stroke induced movement disorders.

However, its potential effects on patients with hemispatial neglect were uninvestigated. The Cited by: 5. Unilateral neglect is a fairly common disorder, usually associated with a stroke, which results in a neglect or lack of attention to one side of space usually, but not exclusively, the left.

Theoretically, it is one of the most interesting and important areas in neuropsychology; practically, it is one of the greatest therapeutic problems facing Book Edition: 1st Edition.

The neglect syndrome (or more simply, neglect) is a fascinating and multifaceted neurological disorder. Patients with neglect act as if portions of their world do not exist. In addition to spatial neglect, they may appear unconcerned about their hemi-paresis and even deny ownership of a limb on the neglected side of their body.

Adaptation to right-deviating prisms is a promising intervention for the rehabilitation of patients with left spatial neglect. In order to test the lateral specificity of prism adaptation on left neglect, the present study evaluated the effect of left-deviating prism on straight-ahead pointing movements and on several classical neuropsychological tests in a group of five right brain Cited by: Key words: spatial attention, hemispatial neglect INTRODUCTION One of the richest sources of evidence for determining the neural mechanisms underlying attention is the study of patients with deficits in attention due to focal brain lesions.

A particularly fruitful source has been the investigation of hemispatial neglect – the. The cognitive and neural bases of spatial neglect.,Karnath, H.O.

/ Milner, D. / Vallar, G.,Oxford University Press,Psicologia - Acquista e ordina libri e testi. The insights obtained from this neuropsychological population provides converging evidence for the psychological and neural mechanisms which mediate spatial representation and dovetail well with existing single unit recording and functional imaging : Marlene Behrmann, John Philbeck.

Ultimately, a better understanding of neglect components will not only enhance the clinical assessment of this complex syndrome and provide new knowledge on the neural mechanisms of spatial awareness in humans, but also constitute a necessary step to elaborate more efficient rehabilitation in brain-injured patients.

FundingCited by:   Neurobiology of Attention is the first encyclopedic volume to summarize the latest developments in attention research.

An authoritative collection of over chapters organized into thematic sections provides both broad coverage and access to Author: Laurent Itti.

Spatial Neglect. Spatial neglect may occur in all three dimensions of space: horizontal, vertical, and radial (near, far) patient neglects the hemispace contralateral to the injured hemisphere; seen on tests of line bisection, target cancellation, and drawing; frequently fail.

Section B: Neuropsychological Processes Underlying Neglect. Gainotti, The Role of Spontaneous Eye Movements in Orienting Attention and in Unilateral Neglect. Rizzolatti, A. Berti, Neural Mechanisms of Spatial Neglect. Kinsbourne, Orientational Bias Model of Unilateral Neglect: Evidence from Attentional Gradients within Hemispace.

Neural Mechanisms of Spatial Neglect Neglect is associated with damage to any one of a number of structures in the frontal and parietal cortices, as well as with damage to the temporal-parietal junction, medial temporal, and subcortical sites, and white matter underlying fronto-parietal cortices (Doricchi and Tomaiuolo,;BartolomeoCited by: 8.

Spatial orienting and attentional capture, Jan Theeuwes 9. Neural systems of spatial attention (fMRI), Diane Beck and Sabine Kastner The time course of spatial attention: Insights from event-related brain potentials,Martin Eimer Neuronal Mechanisms of Spatial Attention in Visual Cerebral Cortex, Marlene Cohen and John Maunsell Spatial neglect is a frequent sequel of right-hemisphere lesions.

The exploratory behaviour of these patients is shifted toward the right side, leading to neglect of stimuli situated on the left (1, 2). Spatial neglect has an important impact on post-stroke recovery and functional outcome.

At discharge from the rehabilitation. The Oxford Handbook of Attention is a veritable who’s who of attention research.

(Sorry that it costs $ USD). Check out the table of contents: Part A: Introduction 1. Current landscape and historical context, Michael Posner Part B: Theoretical Models of Attention. US One Rogers Street Cambridge, MA UK Suite 2, 1 Duchess Street London, W1W 6AN, UK.

Contact Us. The Oxford handbook of attention / During the last three decades, there have been enormous advances in our understanding of the neural mechanisms of selective attention at the network as well as the cellular level. This book brings together the different research areas that constitute contemporary attention research into one comprehe.

Two Neural Systems for Visual Orienting and the Pathophysiology of Unilateral Spatial Neglect. Corbetta, M. Kincade & G.

Shulman - - In Hans-Otto Karnath, David Milner & Giuseppe Vallar (eds.), The Cognitive and Neural Bases of Spatial Neglect.

Oxford University Press. Cited by:. The mechanisms for binocular rivalry may inhibit false matches at different orientations, effectively suppressing noise in neural responses and sharpening the tuning of orientational mechanisms, which can also be related to the phenomenon of dichoptic masking [59, 60].

Hence the strong inhibitory interactions which we are familiar with in the Cited by: 2. Purchase Neurophysiological and Neuropsychological Aspects of Spatial Neglect, Volume 45 - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1.Hemispatial neglect is a heterogeneous condition, and as such, a myriad of locations in the brain are thought to be implicated in this condition.

Most commonly, hemispatial neglect is thought to be caused by stroke or damage to the right hemisphere. Up to two-thirds of patients who suffered from acute right-hemisphere strokes demonstrate signs.