Visual Acuity and the Evolution of Signals.

Journal Article (Review;Journal Article)

Acuity, the fineness with which sensory systems perceive and parse information, limits the information that organisms can extract from stimuli. Here, we focus on visual acuity (the ability to perceive static spatial detail) to discuss relationships between acuity and signal form and evolution. Research suggests that acuity varies by orders of magnitude across species, and that most animals have much lower acuity than humans. Thus, hypotheses regarding the function of spatial patterns must account for the acuity of relevant viewers. New data quantifying acuity in a range of taxa allow us to examine correlations between acuity and ecology, elucidate the selective forces that receiver acuity places on signal evolution, and examine how signals might appear to viewers with different acuities.

Full Text

Duke Authors

Cited Authors

  • Caves, EM; Brandley, NC; Johnsen, S

Published Date

  • May 2018

Published In

Volume / Issue

  • 33 / 5

Start / End Page

  • 358 - 372

PubMed ID

  • 29609907

Electronic International Standard Serial Number (EISSN)

  • 1872-8383

International Standard Serial Number (ISSN)

  • 0169-5347

Digital Object Identifier (DOI)

  • 10.1016/j.tree.2018.03.001


  • eng