Subitizing, Magnitude Representation, and Magnitude Retrieval in Deaf and Hearing Adults

Origins and Development of Generalized Magnitude Representation

Among the most fundamental of mental capacities is the ability to represent magnitude information such as physical size, numerosity, and duration. Accumulating evidence suggests that such cues are processed as part of a general magnitude system with shared more vs less representational structure. Here we review recent research with young children and preverbal infants suggesting that this syste...

General magnitude representation in human infants.

Behavioral demonstrations of reciprocal interactions among the dimensions of space, number, and time, along with evidence of shared neural mechanisms in posterior parietal cortex, are consistent with a common representational code for general magnitude information. Although much recent speculation has concerned the developmental origins of a system of general magnitude representation, direct ev...

Magnitude Representation of Features in Image Analysis

Spatial representation of magnitude in gorillas and orangutans.

Humans mentally represent magnitudes spatially; we respond faster to one side of space when processing small quantities and to the other side of space when processing large quantities. We determined whether spatial representation of magnitude is a fundamental feature of primate cognition by testing for such space-magnitude correspondence in gorillas and orangutans. Subjects picked the larger qu...

Order and Magnitude Share a Common Representation in Parietal Cortex

The role of the intraparietal sulcus (IPS) in the representation of numerical magnitude is well established. Recently, there has also been speculation that the IPS is involved in the representation of ordinal information as well. These claims, however, overlook the fact that all neuroimaging paradigms in which participants make judgments about either magnitude and/or order result in a behaviora...