Pitch and loudness information encoded in auditory imagery as revealed by event-related potentials.
Two experiments using the ERP method and a task that involved comparing an imagined-S1 (the first stimulus) with a perceived-S2 (the second stimulus) were conducted to investigate whether imagined auditory representations encode pitch and loudness information. It was found that the amplitude of the imagery-related late positive complex (LPC) decreased with pitch but increased with loudness of the imagined sound, which was consistent with amplitude modulations of the auditory perception-related N1 component, thereby providing the first neural evidence that auditory imagery encodes perceptual attributes of auditory experiences.
Wu
Jianhui
J
Institute of Psychology, Chinese Academy of Sciences, Beijing, China.
Yu
Zulin
Z
Mai
Xiaoqin
X
Wei
Jinghan
J
Luo
Yuejia
Y
D000161:Acoustic Stimulation; D000704:Analysis of Variance; D001307:Auditory Perception / Q000502:physiology*; D003463:Cues; D004569:Electroencephalography; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D005556:Form Perception / Q000502:physiology; D006801:Humans; D007092:Imagination / Q000502:physiology*; D008144:Loudness Perception / Q000502:physiology*; D008297:Male; D010898:Pitch Perception / Q000502:physiology*; D055815:Young Adult