New research shows neurons in the eye aren’t just signaled to fire more, but use inhibitory signaling to make neurons fire less.

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  • The research, led by Northwestern University, found that in addition to excitatory signals, a subset of retinal neurons send inhibitory signals to the brain (signaling that makes neurons fire less).
  • The study found this subset of retinal neurons is involved in subconscious behaviors such as the synchronization of circadian rhythms to light and dark cycles.
  • This new understanding helps scientists understand how light influences our behavior.
  • The research will be published in the May 1 issue of the journal Science.