Relating to or describing cells or nerve fibers that lack axons and instead communicate directly across small gaps.
From Greek 'a-' (without) + 'makros' (long) + '-ine' (relating to), combining to mean 'without a long process.' The term was coined in the late 19th century to describe a specific type of retinal neuron.
Amacrine cells in your eyes are like the introverts of neurons—they don't send long-distance signals but instead whisper directly to their neighbors, helping your brain process motion and dim light without needing to see in color.
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