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Updated: Jul 28, 2026

Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
Published on: June 3, 2013
Electrophysiological evidence implicates automatic low-level feature detectors in perceptual asymmetry
D V M Bishop1, J O'reilly, G M McArthur
1Department of Experimental Psychology, University of Oxford, South Parks Road, OX1 3UD, UK. dorothy.bishop@psy.ox.ac.uk
Abstract:
Perceptual asymmetry has been demonstrated behaviorally using frequency modulated (FM) stimuli: a modulated tone is easier to detect among unmodulated distracters than the converse. We demonstrate perceptual asymmetry for FM tones in the mismatch negativity (MMN) component of the event-related potential, regardless of whether the participant attends to the tones. These results suggest that perceptual asymmetry reflects the automatic activation of low-level feature detectors in the auditory system.
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