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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 1, Iss. 1 — Aug. 2, 2010
  • pp: 47–58

A practical method of measuring the human temporal contrast sensitivity function

Billy R. Wooten, Lisa M. Renzi, Robert Moore, and Billy R. Hammond, Jr.  »View Author Affiliations

Biomedical Optics Express, Vol. 1, Issue 1, pp. 47-58 (2010)

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One of the more significant indicators of neural age-related loss and disease is reduced temporal processing speed. It would, therefore, be useful to have an accurate and practical device that measures the full range of an individual's temporal processing abilities (characterized as the temporal contrast sensitivity function, TCSF). 70 subjects (15-84 yrs) were tested. A small tabletop device utilizing electronic control of light-emitting diodes (LEDs) was constructed that delivered a 1-degree, 660 nm test (the modulation depth of which could be adjusted directly by the subject) centered within a 10-degree 660 nm surround. The method provided a TCSF that had a shape consistent with past studies (peaking around 8 Hz). Also consistent with past work, the largest age-decline was found at the highest frequencies and for the central fovea (r = 0.47, p<0.0001, ~2 Hz per decade). Psychophysical assessment of temporal vision offers an easy and dynamic measure of central visual function.

© 2010 OSA

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics

ToC Category:
Neuroscience and Brain Imaging

Original Manuscript: April 26, 2010
Revised Manuscript: June 22, 2010
Manuscript Accepted: June 25, 2010
Published: July 14, 2010

Virtual Issues
Bio-Optics in Clinical Application, Nanotechnology, and Drug Discovery (2010) Biomedical Optics Express

Billy R. Wooten, Lisa M. Renzi, Robert Moore, and Billy R. Hammond, "A practical method of measuring the human temporal contrast sensitivity function," Biomed. Opt. Express 1, 47-58 (2010)

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