People who experience visual imagination have pupillary responses that optimize the amount of light hitting the retina and change in response to imagined items. This pupillary response does not occur in those with aphantasia.
A new type of neuron in the mammalian retina has been discovered. The new cell, named the Campana cell, appears to relay visual signals to both rod and cone photoreceptors in the retina, however, their precise purpose is not yet known.
Study reveals how evolution and natural selection have optimized the mammalian retina.
Neural circuits within the retina are able to generate the information required to predict the movement and path of an object before visual signals leave the eye, researchers report.
A new, lasting consequence of COVID-19 infection has been identified. Researchers report they have identified significant abnormalities in the eyes of those with severe coronavirus infection.
The topmost layer of neurons in the retina of mouse models of Alzheimer's disease exhibits textural changes. The findings could be a new biomarker for Alzheimer's disease.
A new study puts into question conventional belief that the eyes communicate with the brain exclusively via one signaling pathway. Researchers have identified a subset of retinal neurons that sends inhibitory signals to the brain. This subset of neurons is also involved in the synchronization of circadian rhythms to light/dark cycles and pupil constriction to bright light intensity.
Light sensitive cells in the fetal retina communicate as part of an interconnected network, giving the retina more light sensitivity during development that previously believed.