Results 31 to 40 of about 1,569,433 (340)

Short-Term Adaptive Modification of Dynamic Ocular Accommodation [PDF]

Investigative Opthalmology & Visual Science, 2009
Indirect observations suggest that the neural control of accommodation may undergo adaptive recalibration in response to age-related biomechanical changes in the accommodative system. However, there has been no direct demonstration of such an adaptive capability.
Shrikant R, Bharadwaj, Indu, Vedamurthy, Clifton M, Schor   +2 more
openaire   +2 more sources

Dark-adapted red flash ERGs in healthy adults [PDF]

, 2018
Purpose: The x-wave of the dark-adapted (DA) ERG to a red flash reflects DA cone function. This exploratory study of healthy adults aimed to investigate changes in the DA red ERG with flash strength and during dark adaptation to optimise visualisation ...
A Chia, A Vincent, DL McCulloch, E Auerbach, ED Adrian, ED Adrian, G Schubert Von, GL Horowitz, H Kawabata, J François, JC Armington, JV Lovasik, JYC Cheng, K Motokawa, K. Graham, KM Nishiguchi, LY Chen, PI Sergouniotis, R Hamilton, R. Hamilton, RA Armstrong, S Mizunoya, S-H Lim, VA McBain, X Liu, Y Miyake   +25 more
core   +1 more source

Custom Ocular Prosthesis for Enucleated Eye: A Case Report

Journal of College of Medical Sciences-Nepal, 2016
The unfortunate loss or absence of an eye may be caused by a congenital defect, irreparable trauma, tumor, sympathetic ophthalmia, or the need for histologic confirmation of a suspected diagnosis.
Surya Narayan Pun, Rojina Shakya, Galav Adhikari, Prakash Kumar Parajuli, Raj Kumar Singh, Pramita Suwal   +5 more
doaj   +1 more source

Neuromorphic Adaptable Ocular Dominance Maps [PDF]

, 2007
Time staggered winner-take-all (ts-WTA) is a novel analog CMOS neuron cell [8], that computes 'sum of weighted inputs" implemented as floating gate pFET 'synapses'. The cell behavior exhibits competitive learning (WTA) so as to refine its weights in response to stimulation by input patterns staggered over time such that at the end of learning, the cell'
Priti Gupta, Mukti Bansal, C. M. Markan
openaire   +1 more source

Adaptations and Deficits in the Vestibulo‐Ocular Reflex after Peripheral Ocular Motor Palsies [PDF]

Annals of the New York Academy of Sciences, 2003
AbstractPalsy of a nerve might be expected to lower vestibulo‐ocular reflex (VOR) responses in its fields of motion, but effects of peripheral neuromuscular disease were unknown. We recorded the VOR during sinusoidal head rotations in yaw, pitch, and roll at 0.5‐2 Hz and static torsional gain in 43 patients with unilateral nerve palsies.
James A, Sharpe, Douglas, Tweed, Agnes M F, Wong   +2 more
openaire   +2 more sources

Incremental Velocity Error as a New Treatment in Vestibular Rehabilitation (INVENT VPT) Trial: study protocol for a randomized controlled crossover trial

Trials, 2021
Background A clinical pattern of damage to the auditory, visual, and vestibular sensorimotor systems, known as multi-sensory impairment, affects roughly 2% of the US population each year.
Ann-Margret Ervin, Michael C. Schubert, Americo A. Migliaccio, Jamie Perin, Hamadou Coulibaly, Jennifer L. Millar, Dale Roberts, Mark Shelhamer, Daniel Gold, Stephanie Beauregard, Robin Pinto, Douglas Brungart, Bryan K. Ward, for the INVENT VPT Research Group   +13 more
doaj   +1 more source

Clinical disorders affecting mesopic vision [PDF]

, 2006
Vision in the mesopic range is affected by a number of inherited and acquired clinical disorders. We review these conditions and summarize the historical background, describing the clinical characteristics alongside the genetic basis and molecular ...
Abramowicz M., Ahmed F., Ahmed F., Al-Kubaisy W., Asrat Y., Ayyagari R., Baillie I., Bergen H. R., Berson E., Bloem M., Bordley J., Bret-Dibat C., Brink E., Burstedt M., Burstedt M., Capon M., Carr R., Carr R., Chisholm C., Christian P., Cunier F., de Pee S., DOG, Donnen P., Duke-Elder S., Fishman G., Fuchs A., Fuchs A., Gross-Jendroska M., Guy J., Haidar J., Hartmann E., Hayashi T., Hayashi T., Heckenlively J., Kalloniatis M., Kamei M., Kellner U., Kolling G., Lauber H., Lei B., Lorenz B., Main A., Marmor M., Marmor M., McBain V., Mele L., Milam A., Miyake Y., Miyake Y., Miyake Y., Mizuo A., Morimura H., Nabakwe E., Nettleship E., Oguchi C., Onder C., Parker W., Perlman I., Pesudovs K., Phelan J., Polans A., Polkinghorne P., Ramalho R., Reiner J., Resnikoff S., Ripps H., Rosen D., Rosen D., Rougier M., Ruiz-Martin M., Saunders C., Sawyer R., Schaumberg D., Schemann J., Schlote T., Schubert G., Sharp D., Shaw C., Skinner H., Smith R. A. J., Sommer A., Somner A., Sorsby A., Souied E., Spalton D., Stephenson S., Stockman A., Tabata Y., Takeuchi T., Taren D., Thirkill C., Tielsch J., Underwood B., Uyemura M., Weinstein J., Weiss J., Weiss N., Wolf G., Wolf G., Wolfe J. E.   +100 more
core   +1 more source

A Neuroanatomically Grounded Optimal Control Model of the Compensatory Eye Movement System in Mice

Frontiers in Systems Neuroscience, 2020
We present a working model of the compensatory eye movement system in mice. We challenge the model with a data set of eye movements in mice (n =34) recorded in 4 different sinusoidal stimulus conditions with 36 different combinations of frequency (0.1–3 ...
Peter J. Holland, Peter J. Holland, Peter J. Holland, Tafadzwa M. Sibindi, Tafadzwa M. Sibindi, Tafadzwa M. Sibindi, Marik Ginzburg, Suman Das, Suman Das, Kiki Arkesteijn, Kiki Arkesteijn, Kiki Arkesteijn, Maarten A. Frens, Opher Donchin, Opher Donchin, Opher Donchin   +15 more
doaj   +1 more source

Subterranean mammals show convergent regression in ocular genes and enhancers, along with adaptation to tunneling

eLife, 2017
The underground environment imposes unique demands on life that have led subterranean species to evolve specialized traits, many of which evolved convergently.
Raghavendran Partha, B. Chauhan, Zelia Ferreira, Joseph Robinson, K. Lathrop, K. Nischal, M. Chikina, N. Clark   +7 more
semanticscholar   +1 more source

Binocular Misalignments Elicited by Altered Gravity Provide Evidence for Nonlinear Central Compensation

Frontiers in Systems Neuroscience, 2015
Increased ocular positioning misalignments upon exposure to altered gravity levels (g-levels) have been strongly correlated with space motion sickness severity, possibly due to underlying otolith asymmetries uncompensated in novel gravitational ...
Kara H. Beaton, W. Cary Huffman, Michael C. Schubert, Michael C. Schubert   +3 more
doaj   +1 more source