Square-Root Law Light Adaptation in Rod-Mediated Vision is Due to Retinal Gain Control
نویسندگان
چکیده
منابع مشابه
Transduction Gain in Light Adaptation of Rod Photoreceptors
Nikonov et al. (2000) recently reported a study of light adaptation in salamander rod photoreceptors. Analysis of their experimental data has led these investigators to conclude that elevation of the level of activated cGMP phosphodiesterase (PDE*) by background light, with a resulting decrease in the effective lifetime of cGMP, is the primary mechanism responsible for noncompressive desensitiz...
متن کاملOn Penrose’s square-root law and beyond
In certain bodies, like the Council of the EU, the member states have a voting weight which depends on the population of the respective state. IN this article we ask the question which voting weight guarantees a ‘fair’ representation of the citizens in the union. The traditional answer, the square-root law by Penrose, is that the weight of a state (more precisely: the voting power) should be pr...
متن کاملControl Gain Adaptation in Virtual Reality Mediated Human–Telerobot Interaction
The Internet connects millions of computers worldwide, and provides a new potential working environment for remote-controlled telerobotic systems. The main limitation of using the Internet in this application is random delays between communicating nodes, which can cause disturbances in human–machine interaction and affect telepresence experiences. This is particularly important in systems integ...
متن کاملQuantifying rod photoreceptor-mediated vision in retinal degenerations: dark-adapted thresholds as outcome measures.
Pre-clinical trials of treatment in retinal degenerations have shown progress toward preventing loss or restoring function of rod photoreceptors. In anticipation of human clinical trials, we assessed two psychophysical methods of quantifying rod photoreceptor-mediated function as potential outcome measures. Modified automated perimeters were used to deliver focal or full-field light stimuli and...
متن کاملPhysiological evidence that light-mediated decrease in cyclic GMP is an intermediary process in retinal rod transduction
Brief, intracellularly injected pulses of cyclic GMP transiently depolarized toad retinal rod outer segments (ROS). The depolarization is antagonized by light, perhaps by the activation of phosphodiesterase (PDE), as shown in the biochemical studies of others. As measured by the antagonism of cyclic GMP pulses by light, PDE activity peaks after the peak of the receptor potential and has approxi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Vision
سال: 2009
ISSN: 1534-7362
DOI: 10.1167/9.14.89