Neural adjustments to image blur

Michael A. Webster, Mark A. Georgeson, Shernaaz M. Webster

Research output: Contribution to journalArticlepeer-review


Blur is an intrinsic feature of retina images that varies widely across images and observers, yet the world still typically appears 'in focus'. Here we examine the putative role of neural adaptation1 in the human perception of image focus by measuring how blur judgments depended on the state of adaptation. Exposure to unfocused images has previously been shown to influence acuity and contrast sensitivity and here we show that adaptation can also profoundly affect the actual perception of image focus.
Original languageEnglish
Pages (from-to)839-840
Number of pages2
JournalNature Neuroscience
Issue number9
Publication statusPublished - Sept 2002


  • blur
  • retinal images
  • neural adaptation
  • human perception
  • focus
  • blur judgments
  • adaptation
  • acuity
  • contrast sensitivity


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