Absolute pitch - electrophysiological evidence

Author(s): Granot, R., Pratt, H.

Journal/Book: Int J Psychophysiol. 1994; 16: PO Box 211, 1000 AE Amsterdam, Netherlands. Elsevier Science Publishers BV. 29-38.

Abstract: People who have the ability to label or to produce notes without any reference are considered to possess Absolute Pitch (AP). Others, who need a reference in order to identify the notes, possess Relative Pitch (RP). The AP ability is assumed to reflect a unique, language-like representation of non-lexical musical notes in memory. The purpose of this study was to examine this assumption by comparing Event Related Potentials (ERP) of musicians with and without AP, to lexical and non-lexical representation of musical material. Subjects were eighteen young adult musicians. Seven were AP and eleven RP. Auditory stimuli, presented through earphones, were piano notes (non-lexical) or a voice saying the note's name (lexical). Visual stimuli, presented on a computer display were note symbols (non-lexical) or letters (lexical). Subjects performed a number of tasks, combining the two modalities (visual and auditory) and stimulus types (lexical and non-lexical), and reaction times (RT), performance accuracy and evoked potentials were recorded. The tasks forced the subjects to transfer mental representations of musical material from one mode to another. Our most important findings were the differences, between groups, in the scalp distribution of P300 amplitudes. We conclude that absolute pitch possessors use the same internal language as relative pitch possessors, when possible, but the distribution of the underlying brain activity is different between AP and RP subjects.

Note: Article H Pratt, Technion Israel Inst Technol, Evoked Potentials Lab, IL-32000 Haifa, Israel

Keyword(s): Absolute Pitch; Relative Pitch; Evoked Potentials; Music Perception; EVENT-RELATED POTENTIALS; MEMORY-SCANNING TASK; CODING STRATEGIES; TONES; P300;. Acoustic Stimulation; Adolescence ; Adult ; Discrimination Psychology physiology; Memory, Short Term physiology; Music ; Photic Stimulation; Reaction Time physiology. Electroencephalography ; Evoked Potentials, Auditory physiology; Evoked Potentials, Visual physiology; Hearing physiology. Human

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