A new study from Yale School of Medicine (YSM) suggests that the eye processes visual information in a far more connected way than scientists had believed. The findings challenge a long standing view of how visual signals travel through the retina and may help explain how we detect faint objects or see in low light.
Our visual system rapidly analyzes many different features of a scene, including color, contrast, motion, and shape. This process, known as parallel visual processing, allows the brain to interpret complex images almost instantly by sending different types of information along separate pathways.
Researchers have long believed these pathways remained largely independent as visual signals moved through the retina and into the brain. However, the new study, published in Neuron, found that these channels are closely linked through hidden electrical connections. According to the research team, this cooperation may strengthen weak visual signals before they move deeper into the visual system.
"We found that while different channels can deliver their own features, they're also interconnected by underlying electrical circuitry," says Yao Xue, PhD, a postdoctoral fellow in the Department of Ophthalmology and Visual Science at YSM and the study's first author.
