Accession Number:

ADA222040

Title:

Receptoral and Neural Aliasing

Descriptive Note:

Annual rept. 1 Nov 1988-31 Oct 1989

Corporate Author:

NEW HAMPSHIRE UNIV DURHAM VISION RESEARCH LAB

Personal Author(s):

Report Date:

1990-03-01

Pagination or Media Count:

23.0

Abstract:

The major thrust of this project has progressed along three different fronts. 1 The laser interferometer has been constructed and a serious attempt has been made to replicate Williams studies of aliasing with a simular apparatus. Surprisingly, these results have generally failed to replicate current investigations center around various avenues which may offer an explanation for this discrepancy. 2 A complementary approach has been started, wherein a small patch of the retinal mosaic is mapped using small points of light. Initial results are quite promising, but it is clear that better control overeye position will be necessary if this is to be a practical technique. The use of video imaging to monitor fixation is under study, with encouraging results. 3 The effect of eye-movements on an alisased image was studied by simulation. Small eye movements ocular tremor will make aliased images move dynamically, but it does not appear that they will render aliasing patterns invisible. Simulations of the embryonic growth of the retinal lattice are being studied, to see if they will produce lattices with the same sort of near-perfect symmetry that is observed in anatomical lattices.

Subject Categories:

  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE