Neural mechanisms underlying high visual acuity are not fully understood. Here the authors show that high resolution visual information is transmitted from the retina to the brain by neurons in the parvocellular geniculate pathway in macaques, where signals are now shown to most often originate from single cone photoreceptors, establishing the neural mechanism that limits resolution acuity prior to cortical processing.
- Keaton M. Ramsey
- Philipp Tellers
- Lawrence C. Sincich