Identification of pleasant, neutral, and unpleasant odors in schizophrenia
نویسندگان
چکیده
منابع مشابه
Neural mechanisms of anhedonia in schizophrenia: a PET study of response to unpleasant and pleasant odors.
CONTEXT Loss of the capacity to experience pleasure (anhedonia) is a core clinical feature of schizophrenia. Although functional imaging techniques have been successful in identifying the neural basis of cognitive impairments in schizophrenia, no attempts to date have been made to investigate neural systems underlying emotional disturbances. OBJECTIVE To study the neural basis of emotional pr...
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Does hedonic appreciation evolve differently for pleasant odors and unpleasant odors during normal aging? To answer this question we combined psychophysics and electro-encephalographic recordings in young and old adults. A first study showed that pleasant odorants (but not unpleasant ones) were rated as less pleasant by old adults. A second study validated this decrease in hedonic appreciation ...
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BACKGROUND AND PURPOSE Odors can elicit a range of behaviors and emotions. Our purpose was to identify regional activation of the human cerebral cortex in response to pleasant (positive hedonic value) and unpleasant (negative hedonic value) odors. METHODS Thirteen neurologically normal adults underwent functional MR imaging of frontal and anterior temporal brain regions with a gradient-echo e...
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Odors can alter hedonic evaluations of human faces, but the neural mechanisms of such effects are poorly understood. The present study aimed to analyze the neural underpinning of odor-induced changes in evaluations of human faces in an odor-priming paradigm, using event-related potentials (ERPs). Healthy, young participants (N = 20) rated neutral faces presented after a 3 s pulse of a pleasant ...
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Olfaction is characterized by a salient hedonic dimension. Previous studies have shown that these affective responses to odors are modulated by physicochemical, physiological, and cognitive factors. The present study examined expertise influenced processing of pleasant and unpleasant odors on both perceptual and verbal levels. For this, performance on two olfactory tasks was compared between no...
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ژورنال
عنوان ژورنال: Psychiatry Research
سال: 2011
ISSN: 0165-1781
DOI: 10.1016/j.psychres.2010.12.011