کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4035230 | 1263514 | 2008 | 8 صفحه PDF | دانلود رایگان |
Thresholds to a temporally modulated contrast stimulus were examined across the central visual field, at photopic luminance (100 cd m−2), under aviation-related respiratory disturbances. These were mild hypoxia (14.1% oxygen), hyperoxia (100% oxygen), and hypocapnia (voluntary hyperventilation), with control exposures breathing air at rest. Thresholds were analysed by retinal eccentricity and by visual field quadrant. Hypoxia compromised sensitivity away from fixation (p < .001). Gender differences in sensitivity were apparent over the nasal hemifield and in response to 100% oxygen. An unexpected and highly statistically significant effect of oxygen tension (PO2) exposure order (p < .001) implies the existence of short-term retinal ‘memory’ for recent PO2.
Journal: Vision Research - Volume 48, Issue 2, January 2008, Pages 281–288