Mental number space in three dimensions.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Experimental Psychology

Background:

• Neuroscience and psychology findings show interplay between spatial and numerical cognition.
• The traditional view posits a horizontal mental number line (small numbers left, large numbers right).

Purpose of the Study:

• To review and synthesize research on the spatial mapping of numbers.
• To explore multi-dimensional number-space associations beyond the horizontal line.
• To discuss origins and implications for brain organization and embodied cognition.

Main Methods:

• Literature review and synthesis of experimental findings.
• Analysis of research on spatial cognition and numerical cognition interactions.
• Theoretical discussion on multi-dimensional number space and embodied cognition.

Main Results:

• Evidence supports multiple spatial mappings for numbers, including vertical and near/far dimensions.
• The traditional horizontal number line is insufficient to explain all observed spatial-numerical associations.
• Number-space mappings may have origins in brain organization and brain-culture interactions.

Conclusions:

• Cognition is embodied, grounded, and situated, as evidenced by multi-dimensional number-space mappings.
• Further research can explore the origins and neural basis of these diverse spatial representations of numbers.
• Novel predictions arise from viewing number-space associations within a three-dimensional framework.