Sink Lighted Area

Short periods of darkness (DR) reduce labeling for neurofilament, a cytoskeleton pro-tein that supports neuron structure by forming a stable intracellular scaffold (O ’ Leary et al., 2012). Recently, we examined the possibility that lowered levels of cytoskeleton protein may reset development of the visual cortex and with it, heightened plasticity (Mitchell et al; 2012; Duffy et al., 2012).. The latter possibility was explored by exami-nation of the extent to which a 10 day period of darkness (DR) enhanced the extent of visual recovery from early monocular deprivation (MD) in kittens. If DR was imposed immediately after the period of MD, amblyopia never developed (Fig. 5) and if imposed 5 to 8 weeks later, the amblyopia disappeared completely in 5-7 days (Fig. 6). We now report on the results of measurements of depth perception that indicate that some of these animals had acquired stereoscopic vision