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Disgust sensitivity

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https://www.readbyqxmd.com/read/28345150/decoding-facial-expressions-based-on-face-selective-and-motion-sensitive-areas
#1
Yin Liang, Baolin Liu, Junhai Xu, Gaoyan Zhang, Xianglin Li, Peiyuan Wang, Bin Wang
Humans can easily recognize others' facial expressions. Among the brain substrates that enable this ability, considerable attention has been paid to face-selective areas; in contrast, whether motion-sensitive areas, which clearly exhibit sensitivity to facial movements, are involved in facial expression recognition remained unclear. The present functional magnetic resonance imaging (fMRI) study used multi-voxel pattern analysis (MVPA) to explore facial expression decoding in both face-selective and motion-sensitive areas...
March 27, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28264633/a-neurology-of-the-conservative-liberal-dimension-of-political-ideology
#2
Mario F Mendez
Differences in political ideology are a major source of human disagreement and conflict. There is increasing evidence that neurobiological mechanisms mediate individual differences in political ideology through effects on a conservative-liberal axis. This review summarizes personality, evolutionary and genetic, cognitive, neuroimaging, and neurological studies of conservatism-liberalism and discusses how they might affect political ideology. What emerges from this highly variable literature is evidence for a normal right-sided "conservative-complex" involving structures sensitive to negativity bias, threat, disgust, and avoidance...
March 7, 2017: Journal of Neuropsychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28249187/altered-processing-of-rewarding-and-aversive-basic-taste-stimuli-in-symptomatic-women-with-anorexia-nervosa-and-bulimia-nervosa-an-fmri-study
#3
Alessio Maria Monteleone, Palmiero Monteleone, Fabrizio Esposito, Anna Prinster, Umberto Volpe, Elena Cantone, Francesca Pellegrino, Antonietta Canna, Walter Milano, Marco Aiello, Francesco Di Salle, Mario Maj
Functional magnetic resonance imaging (fMRI) studies have displayed a dysregulation in the way in which the brain processes pleasant taste stimuli in patients with anorexia nervosa (AN) and bulimia nervosa (BN). However, exactly how the brain processes disgusting basic taste stimuli has never been investigated, even though disgust plays a role in food intake modulation and AN and BN patients exhibit high disgust sensitivity. Therefore, we investigated the activation of brain areas following the administration of pleasant and aversive basic taste stimuli in symptomatic AN and BN patients compared to healthy subjects...
February 21, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28229500/money-for-microbes-pathogen-avoidance-and-out-group-helping-behaviour
#4
Michael Laakasuo, Nils Köbis, Jussi Palomäki, Markus Jokela
Humans have evolved various adaptations against pathogens, including the physiological immune system. However, not all of these adaptations are physiological: the cognitive mechanisms whereby we avoid potential sources of pathogens-for example, disgust elicited by uncleanliness-can be considered as parts of a behavioural immune system (BIS). The mechanisms of BIS extend also to inter-group relations: Pathogen cues have been shown to increase xenophobia/ethnocentrism, as people prefer to keep their societal in-group norms unaltered and "clean...
February 23, 2017: International Journal of Psychology: Journal International de Psychologie
https://www.readbyqxmd.com/read/28208068/altered-olfactory-processing-and-increased-insula-activity-in-patients-with-obsessive-compulsive-disorder-an-fmri-study
#5
Heather A Berlin, Emily R Stern, Johnny Ng, Sam Zhang, David Rosenthal, Rachel Turetzky, Cheuk Tang, Wayne Goodman
Obsessive-compulsive disorder (OCD) patients show increased insula activation to disgust-inducing images compared to healthy controls (HC). We explored whether this disgust reactivity was also present in the olfactory domain by conducting the first fMRI study of olfaction in OCD. Neural activation in response to pleasant and unpleasant odors (vs. unscented air) was investigated in 15 OCD and 15 HC participants using fMRI. OCD participants (vs. HC) had increased left anterior insula activation to unpleasant odors (vs...
February 9, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28165888/voxel-based-morphometry-of-disgust-sensitivity
#6
Albert Wabnegger, Sonja Übel, Anne Schienle
BACKGROUND: Difficulties with the regulation of negative affect have been extensively studied in neuroimaging research. However, dysregulation of a specific emotion, disgust, has hardly been investigated. In the present study, we used voxel-based morphometry to identify whether gray matter volume (GMV) of frontal regions is correlated with personality traits associated with general and disgust-specific emotion regulation difficulties. METHOD: We analyzed T1-weighted images of 49 females (mean age = 22...
February 6, 2017: Social Neuroscience
https://www.readbyqxmd.com/read/28073838/gender-specific-relation-between-olfactory-sensitivity-and-disgust-perception
#7
Ilona Croy, Johanna Bendas, Nadja Wittrodt, Maria Lenk, Peter Joraschky, Kerstin Weidner
The perception of disgust is a powerful but yet puzzling emotion, aiming at the prevention of potential microbial pathogens and being directly linked to olfactory processing in its neurophysiological pathways via the anterior insular cortex. In sample of healthy participants with a natural variation in olfactory function, we investigated the relation between olfactory sensitivity and disgust perception. A total of 123 healthy individuals were surveyed with a disgust sensitivity questionnaire. Olfactory threshold was assessed in all participants using the Sniffin' Sticks...
January 10, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28066706/initial-and-sustained-brain-responses-to-threat-anticipation-in-blood-injection-injury-phobia
#8
Leonie Brinkmann, Hendrik Poller, Martin J Herrmann, Wolfgang Miltner, Thomas Straube
Blood-injection-injury (BII) phobia differs from other subtypes of specific phobia in that it is associated with elevated disgust-sensitivity as well as specific autonomic and brain responses during processing of phobia-relevant stimuli. To what extent these features play a role already during threat anticipation is unclear. In the current fMRI experiment, 16 female BII phobics and 16 female healthy controls anticipated the presentation of phobia-specific and neutral pictures. On the behavioral level, anxiety dominated the anticipatory period in BII phobics relative to controls, while both anxiety and disgust were elevated during picture presentation...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28039856/an-automatic-classifier-of-emotions-built-from-entropy-of-noise
#9
Jacqueline Ferreira, Susana Brás, Carlos F Silva, Sandra C Soares
The electrocardiogram (ECG) signal has been widely used to study the physiological substrates of emotion. However, searching for better filtering techniques in order to obtain a signal with better quality and with the maximum relevant information remains an important issue for researchers in this field. Signal processing is largely performed for ECG analysis and interpretation, but this process can be susceptible to error in the delineation phase. In addition, it can lead to the loss of important information that is usually considered as noise and, consequently, discarded from the analysis...
December 31, 2016: Psychophysiology
https://www.readbyqxmd.com/read/27933022/emotional-empathy-and-facial-mimicry-for-static-and-dynamic-facial-expressions-of-fear-and-disgust
#10
Krystyna Rymarczyk, Łukasz Żurawski, Kamila Jankowiak-Siuda, Iwona Szatkowska
Facial mimicry is the tendency to imitate the emotional facial expressions of others. Increasing evidence suggests that the perception of dynamic displays leads to enhanced facial mimicry, especially for happiness and anger. However, little is known about the impact of dynamic stimuli on facial mimicry for fear and disgust. To investigate this issue, facial EMG responses were recorded in the corrugator supercilii, levator labii, and lateral frontalis muscles, while participants viewed static (photos) and dynamic (videos) facial emotional expressions...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27924707/interindividual-differences-in-chemosensory-perception-toward-a-better-understanding-of-perceptual-ratings-during-chemical-exposures
#11
Marlene Pacharra, Stefan Kleinbeck, Michael Schäper, Stephanie A Juran, Kathrin Hey, Meinolf Blaszkewicz, Marie-Louise Lehmann, Klaus Golka, Christoph van Thriel
Perceptions that arise from stimulation of olfactory and trigeminal receptors in the nasal cavity guide the evaluation of chemical environment in humans. Strong interindividual differences in these assessments may be attributed to nonsensory factors such as gender, anxiety, and chemical sensitivity. Knowledge regarding the influence of these factors originates mainly from basic odor research using short-term exposure scenarios. In situations with continuous chemical exposures-common in the working environment-their impact is less clear...
2016: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/27923265/erratum-for-disgusted-by-sexual-abuse-exploring-the-association-between-disgust-sensitivity-and-posttraumatic-stress-symptoms-among-mothers-of-sexually-abused-children
#12
(no author information available yet)
No abstract text is available yet for this article.
December 2016: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/27917148/corrigendum-distrust-as-a-disease-avoidance-strategy-individual-differences-in-disgust-sensitivity-regulate-generalized-social-trust
#13
Lene Aarøe, Mathias Osmundsen, Michael Bang Petersen
[This corrects the article on p. 1038 in vol. 7, PMID: 27516744.].
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27856343/brain-response-to-masked-and-unmasked-facial-emotions-as-a-function-of-implicit-and-explicit-personality-self-concept-of-extraversion
#14
Thomas Suslow, Harald Kugel, Christian Lindner, Udo Dannlowski, Boris Egloff
Extraversion-introversion is a personality dimension referring to individual differences in social behavior. In the past, neurobiological research on extraversion was almost entirely based upon questionnaires which inform about the explicit self-concept. Today, indirect measures are available that tap into the implicit self-concept of extraversion which is assumed to result from automatic processing functions. In our study, brain activation while viewing facial expression of affiliation relevant (i.e., happiness, and disgust) and irrelevant (i...
January 6, 2017: Neuroscience
https://www.readbyqxmd.com/read/27791090/parasite-stress-and-pathogen-avoidance-relate-to-distinct-dimensions-of-political-ideology-across-30-nations
#15
Joshua M Tybur, Yoel Inbar, Lene Aarøe, Pat Barclay, Fiona Kate Barlow, Mícheál de Barra, D Vaughn Becker, Leah Borovoi, Incheol Choi, Jong An Choi, Nathan S Consedine, Alan Conway, Jane Rebecca Conway, Paul Conway, Vera Cubela Adoric, Dilara Ekin Demirci, Ana María Fernández, Diogo Conque Seco Ferreira, Keiko Ishii, Ivana Jakšić, Tingting Ji, Florian van Leeuwen, David M G Lewis, Norman P Li, Jason C McIntyre, Sumitava Mukherjee, Justin H Park, Boguslaw Pawlowski, Michael Bang Petersen, David Pizarro, Gerasimos Prodromitis, Pavol Prokop, Markus J Rantala, Lisa M Reynolds, Bonifacio Sandin, Bariş Sevi, Delphine De Smet, Narayanan Srinivasan, Shruti Tewari, Cameron Wilson, Jose C Yong, Iris Žeželj
People who are more avoidant of pathogens are more politically conservative, as are nations with greater parasite stress. In the current research, we test two prominent hypotheses that have been proposed as explanations for these relationships. The first, which is an intragroup account, holds that these relationships between pathogens and politics are based on motivations to adhere to local norms, which are sometimes shaped by cultural evolution to have pathogen-neutralizing properties. The second, which is an intergroup account, holds that these same relationships are based on motivations to avoid contact with outgroups, who might pose greater infectious disease threats than ingroup members...
November 1, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27776255/does-the-measure-matter-on-the-association-between-disgust-proneness-and-ocd-symptoms
#16
Bunmi O Olatunji, Chad Ebesutani, Eun Ha Kim
Although some studies suggest that the association between disgust proneness (DP) and obsessive-compulsive symptoms (OCS) is specific to the contamination subtype, others suggest that DP is associated with OCS more broadly. To examine if the discrepant findings may partially reflect differences in self-report measures used, this investigation employed structural equation modeling to examine the association between DP and OCS in three samples that completed different combinations of measures of DP, OCS, and anxiety/negative affect...
October 19, 2016: Journal of Anxiety Disorders
https://www.readbyqxmd.com/read/27761806/mechanisms-for-attentional-modulation-by-threatening-emotions-of-fear-anger-and-disgust
#17
Dandan Zhang, Yunzhe Liu, Lili Wang, Hui Ai, Yuejia Luo
Appropriately attending to threatening environmental stimuli is evolutionarily adaptive and crucial for survival. This study revealed that nonconscious attentional modulation of disgust has different behavioral and event-related potential (ERP) patterns, as compared to fear and anger. To facilitate its evolutionary purpose of avoidance, disgust first diverts rather than attracts attention. Accordingly, the N1 was smaller in a validly than in an invalidly disgust-cued condition. Furthermore, the frontal P3a for disgust, anger, and fear was found to be larger in the valid than in the invalid condition, which was interpreted as an involuntary switching of attention toward threat-related events to mobilize cognitive resources for action or defense...
October 19, 2016: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/27744071/is-disgust-proneness-sensitive-to-treatment-for-ocd-among-youth-examination-of-diagnostic-specificity-and-symptom-correlates
#18
Kelly A Knowles, Megan A Viar-Paxton, Bradley C Riemann, David M Jacobi, Bunmi O Olatunji
Although disgust proneness has been implicated in obsessive-compulsive disorder (OCD), there is a paucity of research examining change in disgust proneness during treatment as well as the correlates of such change, especially in children. This study examined the relationship between changes in disgust proneness and disorder-specific symptoms during residential treatment among youth with OCD, anxiety, and mood disorders. Youth ages 12-18 (n=472) completed pre- and post-outcome measures of OCD, anxiety, and mood symptoms and disgust proneness...
October 6, 2016: Journal of Anxiety Disorders
https://www.readbyqxmd.com/read/27732659/factor-structure-reliability-and-validity-of-the-japanese-version-of-the-disgust-propensity-and-sensitivity-scale-revised
#19
Kazunori Iwasa, Tsunehiko Tanaka, Yuki Yamada
The Disgust Propensity and Sensitivity Scale-Revised is one of the most widely used measures of individual differences for the emotion of disgust. It consists of 2 subscales: disgust propensity and disgust sensitivity. This study examined the factor structure, reliability, and validity of the Japanese version of the revised Disgust Propensity and Sensitivity Scale. Japanese participants (N = 1067) completed the scale as well as the Padua Inventory, Anxiety Sensitivity Index, State-Trait Anxiety Inventory, and Positive and Negative Affective Schedule...
2016: PloS One
https://www.readbyqxmd.com/read/27732023/health-anxiety-in-a-disease-avoidance-framework-investigation-of-anxiety-disgust-and-disease-perception-in-response-to-sickness-cues
#20
Erik Hedman, Mats Lekander, Bianka Karshikoff, Brjánn Ljótsson, Erland Axelsson, John Axelsson
Severe health anxiety is characterized by a debilitating fear of somatic illness, and avoidance of disease-related stimuli plays a key role in the maintenance of the disorder. The aim of this study was to investigate severe health anxiety within an evolutionary disease-avoidance framework. We hypothesized that, compared to healthy controls, participants with severe health anxiety would perceive others as sicker, more contagious, and less attractive. We also expected individuals with severe health anxiety to be more prone to avoid interaction with persons who appeared sick, as well as to respond with more health-related worry, more disgust, and more anxiety when confronting such individuals...
October 2016: Journal of Abnormal Psychology
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