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Titolo:
Auditory cortex on the human posterior superior temporal gyrus
Autore:
Howard, MA; Volkov, IO; Mirsky, R; Garell, PC; Noh, MD; Granner, M; Damasio, H; Steinschneider, M; Reale, RA; Hind, JE; Brugge, JF;
Indirizzi:
Univ Iowa, Coll Med, Dept Surg, Div Neurosurg, Iowa City, IA 52242 USA Univ Iowa Iowa City IA USA 52242 , Div Neurosurg, Iowa City, IA 52242 USA Univ Iowa, Coll Med, Dept Neurol, Iowa City, IA 52242 USA Univ Iowa Iowa City IA USA 52242 ed, Dept Neurol, Iowa City, IA 52242 USA Albert Einstein Coll Med, Dept Neurol, New York, NY 10461 USA Albert Einstein Coll Med New York NY USA 10461 ol, New York, NY 10461 USA Albert Einstein Coll Med, Dept Neurosci, New York, NY 10461 USA Albert Einstein Coll Med New York NY USA 10461 ci, New York, NY 10461 USA Univ Wisconsin, Dept Physiol, Madison, WI 53705 USA Univ Wisconsin Madison WI USA 53705 , Dept Physiol, Madison, WI 53705 USA Univ Wisconsin, Waisman Ctr, Madison, WI 53705 USA Univ Wisconsin MadisonWI USA 53705 n, Waisman Ctr, Madison, WI 53705 USA
Titolo Testata:
JOURNAL OF COMPARATIVE NEUROLOGY
fascicolo: 1, volume: 416, anno: 2000,
pagine: 79 - 92
SICI:
0021-9967(20000103)416:1<79:ACOTHP>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
TONOTOPIC ORGANIZATION; COMPLEX SOUNDS; HUMAN BRAIN; FUNCTIONAL-ORGANIZATION; EVOKED-POTENTIALS; PLANUM TEMPORALE; MACAQUE MONKEYS; LIMBIC SYSTEM; CONNECTIONS; PET;
Keywords:
auditory cortex; hearing; audition;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
91
Recensione:
Indirizzi per estratti:
Indirizzo: Howard, MA Univ Iowa, Coll Med, Dept Surg, Div Neurosurg, Iowa City, IA 52242 USA Univ Iowa Iowa City IA USA 52242 surg, Iowa City, IA 52242 USA
Citazione:
M.A. Howard et al., "Auditory cortex on the human posterior superior temporal gyrus", J COMP NEUR, 416(1), 2000, pp. 79-92

Abstract

The human superior temporal cortex plays a critical role in hearing, speech, and language, yet its functional organization is poorly understood. Evoked potentials (EPs) to auditory click-train stimulation presented binaurally were recorded chronically from penetrating electrodes implanted in Heschl's gyrus (HG), from pial-surface electrodes placed on the lateral superior temporal gyrus (STG), or from both simultaneously, in awake humans undergoing surgery for medically intractable epilepsy. The distribution of averagedEPs was restricted to a relatively small area on the lateral surface of the posterior STG. In several cases, there were multiple foci of high amplitude EPs lying along this acoustically active portion of STG. EPs recorded simultaneously from HG and STG differed in their sensitivities to general anesthesia and to changes in rate of stimulus presentation. Results indicate that the acoustically active region on the STG is a separate auditory area, functionally distinct from the HG auditory field(s). We refer to this acoustically sensitive area of the STG as the posterior lateral superior temporal area (PLST). Electrical stimulation of HG resulted in short-latency EPs in an area that overlaps PLST, indicating that PLST receives a corticocortical input, either directly or indirectly, from HG. These physiological findings are in accord with anatomic evidence in humans and in nonhuman primatesthat the superior temporal cortex contains multiple interconnected auditory areas. J. Comp. Neurol. 416:79-92, 2000. (C) 2000 Wiley-Liss, Inc.

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Documento generato il 28/01/20 alle ore 21:40:58