Abstract
The time course of recovery of spatial resolution following adaptation to a uniform field was measured for test probes presented at lower illuminance than the adapting field. Six observers were tested in a Maxwellian-view system using 20°adapting fields of 1.6-2.6 log photopic trolands. Test stimuli were 7°, 250 ms Gabor patches (1 and 6 cpd) of mean retinal illuminance 2-3 log units lower than the adapting field. During the 9 s after adapting field offset, contrast thresholds for orientation discrimination followed an exponential-decay function and showed longer recovery times for larger illuminance decrements and higher spatial frequency. Copyright (C) 2000 Elsevier Science Ltd.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3059-3064 |
| Number of pages | 6 |
| Journal | Vision Research |
| Volume | 40 |
| Issue number | 22 |
| State | Published - Oct 2000 |
| Externally published | Yes |
Keywords
- Aging
- Contrast sensitivity
- Dark adaptation
- Light adaptation
- Mesopic sensitivity
- Night vision
- Visual acuity
ASJC Scopus subject areas
- Ophthalmology
- Sensory Systems