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Related Concept Videos

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Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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Imaging Studies III: Computed Tomography

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Related Experiment Videos

Continuation of visual-field mapping for a target embedded in a regular background.

A J Courtney1

  • 1University of Hong Kong.

Perceptual and Motor Skills
|December 1, 1989
PubMed
Summary

This study mapped the binocular functional visual-field for two subjects, revealing consistent boundary irregularities. The findings confirm previous observations of individual visual field shapes.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Visual Science

Background:

  • The binocular functional visual-field defines the spatial extent for target detection around a fixation point.
  • Previous research has established baseline visual field shapes for individuals.

Purpose of the Study:

  • To map the binocular functional visual-field in two subjects.
  • To assess the consistency and characteristics of visual field shapes, including boundary irregularities.

Main Methods:

  • Utilized a peripherally presented target against a regular background.
  • Mapped the visual field for two human subjects.

Main Results:

  • The overall shapes of the binocular functional visual-field were remarkably similar between the two subjects.

Related Experiment Videos

  • The mapping confirmed the presence of boundary irregularities in the visual fields of both subjects.
  • Conclusions:

    • Individual binocular functional visual-field shapes exhibit high consistency.
    • Boundary irregularities are a notable characteristic of the visual fields in these subjects.