The visual acuity and refractive state of the American kestrel (Falco sparverius)

39Citations
Citations of this article
68Readers
Mendeley users who have this article in their library.

Abstract

The pattern electroretinogram (PERG) was used to measure the visual acuity and refractive state of nine American kestrels (Falco sparverius). Visual acuity was determined from psychometric functions of PERG amplitude vs. spatial frequency. Refractive state was measured by finding the trial lens that resulted in the highest acuity. All nine kestrels were found to be emmetropic. Their median visual acuity was 29 c/deg. The PERG, however, underestimates behaviorally determined visual acuity by approximately 37%. When adjusted for this underestimation, the median kestrel acuity was 46 c/deg. The visual acuity of American kestrels is compared to reports in the literature of 17 other species of birds. © 2003 Elsevier Ltd. All rights reserved.

Cite

CITATION STYLE

APA

Gaffney, M. F., & Hodos, W. (2003). The visual acuity and refractive state of the American kestrel (Falco sparverius). Vision Research, 43(19), 2053–2059. https://doi.org/10.1016/S0042-6989(03)00304-3

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free