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Related Experiment Videos

VS--a new computer program for detailed offline analysis of visual-spatial perception

G Kerkhoff1, C Marquardt

  • 1EKN-Clinical Neuropsychology Research Group, City Hospital Bogenhausen, Munich, Germany.

Journal of Neuroscience Methods
|December 1, 1995
PubMed
Summary

A new software program, VS, aids in analyzing human visual-spatial (VS) perception, particularly in brain-damaged patients. It offers reliable testing for various VS tasks and demonstrates sensitivity in clinical cases.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Human-Computer Interaction

Background:

  • Visual-spatial (VS) perception is crucial for daily functioning.
  • Assessing VS deficits, especially in brain-damaged patients, requires precise tools.
  • Existing methods may lack flexibility or comprehensive analysis capabilities.

Purpose of the Study:

  • To introduce and describe the VS software program for analyzing human visual-spatial perception.
  • To evaluate the program's suitability for various VS tests and its utility with brain-damaged populations.
  • To demonstrate the program's sensitivity and specificity through case reports.

Main Methods:

  • Development of the VS software for IBM-AT compatible systems.
  • Implementation of tests including subjective visual vertical (SVV), subjective visual horizontal (SVH), and various discrimination tasks.

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  • Utilizing methods of limits for psychophysical parameter computation and storage in dBASE files.
  • Incorporation of a text editor with macro languages for customizable experiments and plots.
  • Inclusion of normative data and standard plots for comparison.

    • Main Results:

    • The VS program supports analysis of multiple visual-spatial tests with adjustable parameters.
    • Stable results and good retest-reliability (rtt = 0.77) were observed in normal controls and brain-damaged patients.
    • Case reports illustrated the program's sensitivity in detecting visual neglect, Balint's syndrome, and post-lesion deficits.

    Conclusions:

    • The VS software provides a versatile and reliable tool for the quantitative analysis of visual-spatial perception.
    • It is suitable for both research and clinical applications, particularly for assessing brain-damaged individuals.
    • The program's flexibility and demonstrated reliability support its use in understanding and diagnosing VS impairments.