Fig. 8: VMA for the visual field areas across three isopters in young and older adults.
From: The vertical position of visual information conditions spatial memory performance in healthy aging
Bean plots depicting the vertical meridian asymmetry (VMA) for visual field areas across isopters V1, III1, and II1 (n = 25 young + 18 older adults). Trained orthoptists measured visual field areas with kinetic perimetry for each participant. The vertical meridian asymmetry computes the discrepancy between the lower and upper visual field areas. A score of 0 indicates no difference between the upper and lower visual field areas. A score superior to 0 indicates a greater area for the lower visual field and a score inferior to 0 indicates a greater area for the upper visual field. We found evidence for main effects of age (F(1, 40) = 6.75, p = 0.013, ηp2 = 0.14, CI [0.007, 0.35]) and isopter (F(2, 213) = 5.90, p = 0.0032, ηp2 = 0.05, CI [0.007, 0.12]) on VMA for visual field areas. **p < 0.01, *p < 0.05. The bean plots provide the density curve for each age group side-by-side, along with individual data points displayed in a colored rug-plot. Bold horizontal black lines correspond to the mean of each group. The studied isopter is colored in dark gray below the beanplot. UVF upper visual field, LVF lower visual field.
