Peripheral Prisms Improve Obstacle Detection during Simulated Walking for Patients with Left Hemispatial Neglect and Hemianopia

Optometry and Vision Science : Official Publication of the American Academy of Optometry
Kevin E HoustonRussell L Woods

Abstract

The first report on the use of peripheral prisms (p-prisms) for patients with left neglect and homonymous visual field defects (HVFDs). The purpose of this study was to investigate if patients with left hemispatial neglect and HVFDs benefit from p-prisms to expand the visual field and improve obstacle detection. Patients (24 with HVFDs, 10 of whom had left neglect) viewed an animated, virtual, shopping mall corridor and reported if they would have collided with a human obstacle that appeared at various offsets up to 13.5° from their simulated walking path. There were 40 obstacle presentations on each side, with and without p-prisms. No training with p-prisms was provided, and gaze was fixed at the center of expansion. Detection on the side of the HVFD improved significantly with p-prisms in both groups, from 26 to 92% in the left-neglect group and 43 to 98% in the non-neglect group (both P < .001). There was a tendency for greater improvement in the neglect patients with p-prisms. For collision judgments, both groups exhibited a large increase in perceived collisions on the side of the HVFD with the prisms (P < .001), with no difference between the groups (P = .93). Increased perceived collisions represent a wider perceived saf...Continue Reading

References

Nov 1, 1975·Journal of Psychiatric Research·M F FolsteinP R McHugh
Oct 1, 1995·Archives of Physical Medicine and Rehabilitation·J S WebsterM C Godlewski
Apr 1, 1996·Neurology·M J KupersmithA Berenstein
Mar 1, 1997·American Journal of Physical Medicine & Rehabilitation·P M PedersenT S Olsen
Jul 1, 1997·Stroke; a Journal of Cerebral Circulation·L KalraM Wittink
Oct 8, 1998·Brain : a Journal of Neurology·N SmaniaC A Marzi
Jan 12, 2000·Cerebrovascular Diseases·S PaolucciM Bragoni
Oct 3, 2000·Optometry and Vision Science : Official Publication of the American Academy of Optometry·E Peli
Mar 10, 2001·Archives of Physical Medicine and Rehabilitation·S PaolucciF Rizzi
Jun 2, 2001·Archives of Physical Medicine and Rehabilitation·S PaolucciL Pizzamiglio
Jan 10, 2002·Stroke; a Journal of Cerebral Circulation·Stephen BaggWilma Hopman
Feb 22, 2002·Neuroscience and Biobehavioral Reviews·Paolo Bartolomeo, Sylvie Chokron
Feb 18, 2003·Archives of Physical Medicine and Rehabilitation·Philippe AzouviLuigi Tesio
Mar 10, 2004·Neurology·L J BuxbaumH B Coslett
Apr 14, 2005·Archives of Physical Medicine and Rehabilitation·Robert GillenTara McKee
Jul 27, 2005·Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]·Patrick SchuellerNormann Willich
Jun 28, 2006·BMC Neurology·M Fruhmann BergerH-O Karnath
Feb 3, 2007·Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia·Bradley Scott TownendDenis Crimmins
May 14, 2008·Archives of Ophthalmology·Alex R BowersEli Peli
Jul 9, 2008·Journal of Clinical and Experimental Neuropsychology·Laurel J BuxbaumH Branch Coslett
Nov 8, 2008·Annals of the New York Academy of Sciences·John C Adair, Anna M Barrett
Nov 13, 2008·Neuropsychology·Monika Fruhmann BergerHans-Otto Karnath
Nov 26, 2008·Age and Ageing·Fiona RoweCicely Freeman
Apr 10, 2009·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Robert G GiorgiEli Peli
May 22, 2009·Investigative Ophthalmology & Visual Science·Gang LuoEli Peli
Jul 18, 2009·Investigative Ophthalmology & Visual Science·Alex R BowersEli Peli
Aug 13, 2010·Clinical Rehabilitation·Victoria Singh-Curry, Masud Husain
Nov 3, 2010·European Neurology·A SajM Rousseaux
Jan 11, 2011·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Evelyn C O'NeillPatricia Logan
Jun 23, 2011·Annual Review of Neuroscience·Maurizio Corbetta, Gordon L Shulman
Dec 19, 2013·Investigative Ophthalmology & Visual Science·Concetta F AlbertiAlex R Bowers
Sep 2, 2014·The Quarterly Journal of Experimental Psychology : QJEP·Michael I Posner
Jun 30, 2015·Investigative Ophthalmology & Visual Science·Kevin E HoustonAlex R Bowers
Jan 8, 2016·Translational Vision Science & Technology·Henry Apfelbaum, Eli Peli
May 16, 2017·Journal of Clinical and Experimental Neuropsychology·Antonia F Ten BrinkTanja C W Nijboer
Jul 21, 2017·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Eli Peli, Jae-Hyun Jung
Jan 24, 2018·Translational Vision Science & Technology·Kevin E HoustonAlex R Bowers

❮ Previous
Next ❯

Citations

Sep 1, 2018·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Bradley Dougherty
Apr 6, 2019·Current Neurology and Neuroscience Reports·A M Barrett, K E Houston

❮ 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.

© 2022 Meta ULC. All rights reserved