Fig. 4: Discrimination of numerical stimuli controlled for continuous variables.
From: Quantity discrimination in newly hatched zebrafish suggests hardwired numerical abilities
a Stimuli used in the 2vs.4 bars discrimination performed to unravel the role of continuous variables in quantitative discrimination. b Preference for the choice sector with the larger (four) and the smaller (two) number of bars with respect to the four continuous variables controlled (N = 120 subjects). Large dots and error bars represent means and standard errors, respectively. Small dots indicate individual data points. Asterisks represent a significant difference (P < 0.05) in the time spent in the two sectors.
