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Titolo:
FREQUENCY AND PERIODICITY ARE REPRESENTED IN ORTHOGONAL MAPS IN THE HUMAN AUDITORY-CORTEX - EVIDENCE FROM MAGNETOENCEPHALOGRAPHY
Autore:
LANGNER G; SAMS M; HEIL P; SCHULZE H;
Indirizzi:
TECH UNIV DARMSTADT,INST ZOOL,SCHNITTSPAHNSTR 3 D-64287 DARMSTADT GERMANY HELSINKI UNIV TECHNOL,LOW TEMP LAB FIN-02150 ESPOO FINLAND
Titolo Testata:
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology
fascicolo: 6, volume: 181, anno: 1997,
pagine: 665 - 676
SICI:
0340-7594(1997)181:6<665:FAPARI>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVOKED MAGNETIC-FIELDS; TONOTOPIC ORGANIZATION; INFERIOR COLLICULUS; AMPLITUDE-MODULATION; NEURONAL MECHANISMS; COCHLEAR NUCLEUS; PITCH ANALYSIS; TIME DOMAIN; SYSTEM; CAT;
Keywords:
PERIODICITY PITCH; TONOTOPY; AUDITORY CORTEX; MAGNETOENCEPHALOGRAPHY; NEURONAL MAP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
G. Langner et al., "FREQUENCY AND PERIODICITY ARE REPRESENTED IN ORTHOGONAL MAPS IN THE HUMAN AUDITORY-CORTEX - EVIDENCE FROM MAGNETOENCEPHALOGRAPHY", Journal of comparative physiology. A, Sensory, neural, and behavioral physiology, 181(6), 1997, pp. 665-676

Abstract

Timbre and pitch are two independent perceptual qualities of sounds closely related to the spectral envelope and to the fundamental frequency of periodic temporal envelope fluctuations, respectively. To a first approximation, the spectral and temporal tuning properties of neurons in the auditory midbrain of various animals are independent, with layouts of these tuning properties in approximately orthogonal tonotopicand periodotopic maps. For the first time we demonstrate by means of magnetoencephalography a periodotopic organization of the human auditory cortex and analyse its spatial relationship to the tonotopic organization by using a range of stimuli with different temporal envelope fluctuations and spectra and a magnetometer providing high spatial resolution. We demonstrate an orthogonal arrangement of tonotopic and periodotopic gradients. Our results are in line with the organization of such maps in animals and closely match the perceptual orthogonality of timbre and pitch in humans.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 16:13:05