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Titolo:
Increased intensity perception of aversive taste following right anteromedial temporal lobe removal in humans
Autore:
Small, DM; Zatorre, RJ; Jones-Gotman, M;
Indirizzi:
Northwestern Univ, Sch Med, NW Brain Mapping Grp, Chicago, IL 60611 USA Northwestern Univ Chicago IL USA 60611 Mapping Grp, Chicago, IL 60611 USA
Titolo Testata:
BRAIN
, volume: 124, anno: 2001,
parte:, 8
pagine: 1566 - 1575
SICI:
0006-8950(200108)124:<1566:IIPOAT>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; RAT INSULAR CORTEX; TYROSINE PHOSPHORYLATION; GUSTATORY DISTURBANCE; PONTINE HEMORRHAGE; MACAQUE MONKEY; RHESUS-MONKEY; RESPONSES; AMYGDALA; AREAS;
Keywords:
cerebral dominance; temporal lobe; aversion; reward; taste perception;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Small, DM Northwestern Univ, Sch Med, NW Brain Mapping Grp, 320 E Super StSearle 11-465, Chicago, IL 60611 USA Northwestern Univ 320 E Super St Searle 11-465 Chicago IL USA 60611
Citazione:
D.M. Small et al., "Increased intensity perception of aversive taste following right anteromedial temporal lobe removal in humans", BRAIN, 124, 2001, pp. 1566-1575

Abstract

We used a modified version of the Spatial Taste Test to assess taste intensity perception in patients with either left or right temporal resection from the anteromedial temporal lobe (AMTL), and a group of control subjects. Sweet, sour, salty and bitter solutions were applied onto discrete locations of the tongue to stimulate either left or right fungiform, or left or right foliate papillae. Intensity ratings were assessed with the Labeled Magnitude Scale. Subjects also sipped 5 ml of each solution for whole mouth stimulation. Genetically based determinants of taste sensitivity were assessed with ratings of 6-n-propylthiouracil, and covaried from all analyses. As inprevious studies, analysis of covariance indicated that the subjects in the right temporal group rated an aversive bitter taste as more intense than did subjects in the control group. In contrast, there were no group differences for sucrose ratings, suggesting that the AMTL may be involved preferentially in processing aversive compared with hedonic tastes. No group x side, or group x location effects were present. These results confirm that removal of the right AMTL in humans results in increased taste intensity/aversiveness perception. This finding complements existing literature indicating that the AMTL is important for processing aversive taste, and suggests thatinhibitory mechanisms may play an important role in such processing.

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Documento generato il 28/11/20 alle ore 04:18:40