Video-Game Play Induces Plasticity in the Visual System of Adults with Amblyopia
(a) Visual counting. A number (N = 1–10 dots) of black circular dots was presented for 200 ms against a gray background. The target stimulus was then followed by a checkerboard pattern for another 100 ms. Observers were asked to enumerate the number of dots as quickly and accurately as they could. No feedback was given. Note that the dot size was scaled with visual acuity, and therefore the dots displayed on the screen were very visible. (b) Counting threshold. Non-amblyopic eye (NAE) versus amblyopic eye (AE). (c) Percent improvement of counting threshold in the amblyopic eye after video-game intervention. SIM: n = 4 (dotted circles). MOH: n = 10. (d–e) Subgroup analysis—Undercounting. (d) Number of dots reported as a function of number of dots displayed. (e) Counting threshold calculation. An arrow indicates an increase in counting threshold. (f) Response latency as a function of number of dots.