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Reaction time (RT) profiles for comparing magnitudes (e.g., numbers, physical sizes) are similar - the larger the difference between the compared stimuli, the shorter the RT (distance effect). Nevertheless, it is unclear whether such correspondence is due to similar, two-dimensional, linear mental representations of magnitudes. In contrast, pitch perception has a more complex, two-dimensional, helical representation. This study examined whether comparisons of music pitches are similar to other magnitude response functions. Experiment 1 employed a comparison task, resulting in an RT profile identical to that obtained when comparing other magnitudes. In contrast, Experiment 2 employed a discrimination task, resulting in RTs that matched the helical representation and were dissociated from the classical distance effect. Experiment 3 replicated the results of Experiment 1 using a comparison task with different stimuli and intervals. These findings imply that the distance effect under comparison tasks might reflect a general sensorimotor transformation, rather than mental representation per se.

Original publication

DOI

10.1016/j.cortex.2007.08.002

Type

Journal article

Journal

Cortex

Publication Date

04/2008

Volume

44

Pages

470 - 477

Keywords

Acoustic Stimulation, Adult, Analysis of Variance, Concept Formation, Discrimination (Psychology), Female, Humans, Imagination, Male, Mathematics, Mental Processes, Pitch Discrimination, Reaction Time, Space Perception