Left hand movements and right hemisphere activation in unilateral spatial neglect: a test of the interhemispheric imbalance hypothesis

Neuropsychologia
G GainottiAntonella Cappa

Abstract

The aim of the present study was to check one of the main assumptions of the interhemispheric imbalance hypothesis, namely, the prediction that the severity of neglect should be reduced by conditions activating the right hemisphere. To achieve this, a group of neglect patients was studied using a slightly modified version of the limb activation technique. The (verbal or visuo-spatial) nature of the stimuli to be processed by the patient and the (left or right) side of space where the left hand moved were considered as the critical variables to check the interhemispheric imbalance hypothesis. Three traditional and one new methods were used to measure changes induced in the severity of neglect by the material to be processed or by the side of space where the left hand moved. The traditional methods, all based on counting omissions, consisted of measuring: (a) the overall number of omissions; (b) the number of omissions made on the left half sheet; or (c) the difference between the omissions made on the left and right sides of the sheet. The new index, based on the notion of the 'attentional field' and defined as the spatial distribution of stimuli detected by the patient, was operationally measured by computing the distance betwe...Continue Reading

References

Jan 1, 1978·Archives of Neurology·K M Heilman, R T Watson
Sep 1, 1992·Journal of Neurology, Neurosurgery, and Psychiatry·I H RobertsonC Geggie
Jan 1, 1991·Neuropsychologia·P W HalliganJ C Marshall
Dec 1, 1990·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·L PizzamiglioG Antonucci
Jul 1, 1990·International Disability Studies·P HalliganJ Cockburn
Mar 1, 1990·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·G VallarM L Rusconi
Jan 1, 1989·Neuropsychologia·P W Halligan, J C Marshall
Jun 1, 1988·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·P W Halligan, J C Marshall
Jan 1, 1987·Neuropsychologia·S CappaE Bisiach
Aug 1, 1986·Brain : a Journal of Neurology·G GainottiM C Silveri
Jan 1, 1986·Neuropsychologia·Y JoanetteM Samson
Mar 1, 1985·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·B Caplan
Jul 1, 1985·Neurology·A B Rubens
Jun 1, 1973·Neurology·M L Albert
Aug 1, 1972·Journal of Neurology, Neurosurgery, and Psychiatry·G GainottiR Tissot
Sep 1, 1982·Brain : a Journal of Neurology·G DenesA Lis
Jan 1, 1995·Experimental Brain Research·H O Karnath
Aug 1, 1995·Perception & Psychophysics·J E Hoffman, B Subramaniam
Nov 1, 1993·Neuropsychologia·G VallarL Pizzamiglio
Jul 1, 1996·The American Journal of Occupational Therapy : Official Publication of the American Occupational Therapy Association·K C Lin
Feb 12, 1998·Experimental Brain Research·E LàdavasF Barboni
Apr 20, 2001·Neuropsychologia·F FrassinettiE Làdavas
Aug 15, 2003·Journal of Clinical and Experimental Neuropsychology·Lynn C RobertsonRobert Knight
Jun 9, 2009·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Guido Gainotti

❮ Previous
Next ❯

Citations

Oct 22, 2010·Experimental Brain Research·Zaira CattaneoTomaso Vecchi
Jul 11, 2009·The Neurologist·Randolph S Marshall
Oct 17, 2012·Journal of Neurology, Neurosurgery, and Psychiatry·Paresh A MalhotraCharlotte Russell
Oct 10, 2013·Experimental Brain Research·Beverly C Butler, Gail A Eskes
Sep 23, 2014·Neuroscience Letters·Noémie C DuclosSerge Mesure
Jun 1, 2012·Journal of Neuropsychology·Lorenzo PiaGiuseppe Vallar
Jul 18, 2015·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Luca RinaldiZaira Cattaneo
Dec 6, 2014·Journal of Neuroengineering and Rehabilitation·Valentina VaraltaNicola Smania
Oct 4, 2016·Der Nervenarzt·T Brandt, A Welfringer
Sep 9, 2016·Annals of Rehabilitation Medicine·Yoon Sik ChoiSook Joung Lee

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.