Direction-selective retinal ganglion cells encode motion direction uniformly, despite having discretely distributed cardinal preferences.

Direction-selective retinal ganglion cell populations show uniformly high sensitivity to motion direction across all angles, despite each subtype having discretely distributed cardinal preferences.

• Why it matters: Natural motion can occur in intermediate directions, so it was unclear whether cardinally tuned DS subtypes create weaker encoding or instead still support consistent direction representation.
• What they did: The study reanalyzed prior electrophysiology from DS RGCs using a moving light bar and computed Stimulus Specific Information to estimate directional sensitivity of small recorded neuron populations.
• The result: Simulations that altered tuning widths suggest DS cells emphasize avoiding sharp sensitivity drops rather than maximizing average information, reducing potential “blind spots” in motion encoding.

AI summary of the abstract · may contain errors · not medical advice · read the paper.