The Characteristics And Neural Substrates Of Children Numerical Cognition

Numerical cognition is crucial and a central property of mathematical cognition. A better understanding of the Characteristics and its neural substrates of Children's numerical cognition can be illustrated in the goal to understand Children's numerical abilities. The present study investigated the spatio-temporal course of numerical cognition coding operations using event-related potentials (ERPs). Sixteen 4-5 grade primary school students performed a quantity task (judge numbers as smaller or larger than 5) and an order task (judge numbers as coming before or after 5) on the same material (Arabic numerals and a set of visually presented dots of a certain number). Results as followed:(1)In Experiment 1, on the early visual identification stage, which was affected by stimuli material, shows a larger P1 amplitude to the Arabic material than dots, and a greater N1 amplitude to the dots than Arabic numerals, but both latency have no significant differences. During Semantic representation processing, shows greater P2 amplitude to the Arabic numerals than dots, but shorter latency.(2) In Experiment 2, on the early visual identification stage, which was affected by stimuli material, shows a larger P1 amplitude to the Arabic material than dots, and a greater Nl amplitude to the dots than Arabic numerals. There is no significant difference during Semantic processing.(3) The visual identification stage was affected by stimulus notation on two experimental tasks, but semantic representation is notation-independent.