{"fact":"The crow's brain seems to use two ways of remembering the number of pecks – one for short-term memory and one for planning the pecks.","context":"For the sensorimotor transformation process, two extreme codes are conceivable ... neurons might be tuned to a specific target number during the sensory instruction period and maintain this representation over long time periods ... dynamic code could occur whereby neurons fire sparsely and rapidly change numerical tuning over time.","source":"Maximilian E. Kirschhock; Andreas Nieder, Number selective sensorimotor neurons in the crow translate perceived numerosity into number of actions, 10.1038/s41467-022-34457-5","index":389}