In 1993, Dehaene found the SNARC effect, and the connection between numbers and space
came into our view fields. With more and more researches, researchers found that there are not only
spatial connections in numbers, but also similar relationships in letters, colors, time and other aspects.
These phenomena are called the SNARC like effect. Until now, there are four types of SNARC like effect,
whether the effect is brought by itself or by the influence of culture. There is still controversy on this issue.
In addition, the theoretical explanation and neural mechanism of SNARC like effect are further studied.