The mental number line in depth revealed by vection.
To explore how numbers are represented in depth in our mental space, we asked participants to sequentially speak random numbers while they observed forward/backward vection. We found that participants tended to generate larger numbers when they perceived backward self-motion. The results suggest that numerical magnitudes were topographically mapped onto our mental space from front to rear in an ascending order.
Kyushu University, Hakozaki, Higashu-ku, Fukuoka-shi 812 8581, Japan.
Takeharu
T
Seno
Shuichiro
S
Taya
Hiroyuki
H
Ito
Shoji
S
Sunaga
D001244:Association; D003210:Concept Formation; D003867:Depth Perception; D005260:Female; D006801:Humans; D007088:Illusions; D007092:Imagination; D007699:Kinesthesis; D008297:Male; D008433:Mathematics; D057849:Optic Flow; D009949:Orientation; D010775:Photic Stimulation; D011601:Psychophysics; D013028:Space Perception; D014705:Verbal Behavior; D014796:Visual Perception; D055815:Young Adult