Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Feature search in persons with severe visual impairment.

T K Kuyk1, L Liu, P S W Fuhr

  • 1The Department of Veterans Affairs Medical Center, Birmingham, AL, USA. Thomas.kuyk.ctr@brooks.af.mil

Vision Research
|September 6, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Nuclear transfer in sheep embryos: the effect of cell-cycle coordination between nucleus and cytoplasm and the use of in vitro matured oocytes.

Molecular reproduction and development·1997
Same author

Role of secreted proteins and gonadotrophins in promoting full maturation of porcine oocytes in vitro.

Molecular reproduction and development·1997
Same author

The responses of rat trigeminal ganglion neurons to capsaicin and two nonpungent vanilloid receptor agonists, olvanil and glyceryl nonamide.

The Journal of neuroscience : the official journal of the Society for Neuroscience·1997
Same author

Localization of human intestinal defensin 5 in Paneth cell granules.

Infection and immunity·1997
Same author

Evidence for the existence of two ATP-sensitive Rb+ occlusion pockets within the transmembrane domains of Na+/K+-ATPase.

The Journal of biological chemistry·1997
Same author

Affected members of melanoma-prone families with linkage to 9p21 but lacking mutations in CDKN2A do not harbor mutations in the coding regions of either CDKN2B or p19ARF.

Genes, chromosomes & cancer·1997

Visually impaired (VI) individuals exhibit slower feature search performance compared to normal vision (NV) controls. While both groups show parallel search, increasing visual field size disproportionately impacts VI participants.

Area of Science:

  • Visual perception and psychophysics
  • Ophthalmology and low vision research

Background:

  • Understanding visual search performance is crucial for individuals with visual impairments (VI).
  • Previous research indicates differences in visual processing between VI and normal vision (NV) populations.

Purpose of the Study:

  • To compare feature search performance between visually impaired (VI) and normal vision (NV) individuals.
  • To investigate the effects of varying field sizes and set sizes on search times in both groups.

Main Methods:

  • Participants included legally blind individuals (VI) and age-matched controls with normal vision (NV).
  • Visual search task involved identifying a square target among smaller square distracters on a dark background.
  • Tested conditions included three field sizes (10°, 20°, 40°) and three set sizes (8, 16, 32 items).

Related Experiment Videos

Main Results:

  • VI subjects demonstrated slower search times than NV subjects.
  • Reaction time did not increase with set size in either group, suggesting parallel search.
  • Both groups were slower with larger field sizes, but VI subjects were more affected.

Conclusions:

  • Visually impaired individuals experience significant deficits in feature search speed.
  • The visual field size has a greater detrimental impact on the search performance of VI individuals.
  • Findings highlight the challenges faced by VI individuals in complex visual environments.