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Arousal Regulation

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https://www.readbyqxmd.com/read/28077390/reversible-temperature-dependent-differences-in-brown-adipose-tissue-respiration-during-torpor-in-a-mammalian-hibernator
#1
Sarah Victoria McFarlane, Katherine E Mathers, James F Staples
While seasonal modifications of brown adipose tissue (BAT) in hibernators are well documented, we know little about functional regulation of BAT in different phases of hibernation. In the 13-lined ground squirrel, liver mitochondrial respiration is suppressed by up to 70% during torpor. This suppression is reversed during arousal an°°d interbout euthermia (IBE), and corresponds with patterns of maximal activities of electron transport system (ETS) enzymes. Uncoupling of BAT mitochondria is controlled by free-fatty acid release stimulated by sympathetic activation of adipocytes, so we hypothesized that further regulation at the level of the ETS would be of little advantage...
January 11, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28072452/what-our-eyes-tell-us-about-feelings-tracking-pupillary-responses-during-emotion-regulation-processes
#2
Valerie L Kinner, Lars Kuchinke, Angelika M Dierolf, Christian J Merz, Tobias Otto, Oliver T Wolf
Emotion regulation is essential for adaptive behavior and mental health. Strategies applied to alter emotions are known to differ in their impact on psychological and physiological aspects of the emotional response. However, emotion regulation outcome has primarily been assessed via self-report, and studies comparing regulation strategies with regard to their peripheral physiological mechanisms are limited in number. In the present study, we therefore aimed to investigate the effects of different emotion regulation strategies on pupil dilation, skin conductance responses, and subjective emotional responses...
January 10, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28068499/metacognitive-interpersonal-therapy-for-personality-disorders-swinging-from-emotional-over-regulation-to-dysregulation-a-case-study
#3
Giampalo Salvatore, Raffaele Popolo, Luisa Buonocore, Anna Maria Ferrigno, Mariagrazia Proto, Anna Sateriale, Marianna Serio, Giancarlo Dimaggio
Many patients with personality disorders (PD) display emotional inhibition or over-regulation (EOR); others display emotional dysregulation (ED)- heightened sensitivity to emotional stimuli with difficulty toning down arousal. To date, most treatments focus on patients with ED, particularly those with borderline disorders, though some focus on EOR. Patients with complex PD often swing from periods of EOR to ED. In this paper, we describe an adaptation of metacognitive interpersonal therapy (MIT), which has been manualized for treating PD with prominent EOR and is aimed at dealing with patients fluctuating from EOR to ED...
December 31, 2016: American Journal of Psychotherapy
https://www.readbyqxmd.com/read/28067612/is-there-a-paradox-of-aging-when-the-negative-aging-stereotype-meets-the-positivity-effect-in-older-adults
#4
Liqing Zhou, Jia Lu, Guopeng Chen, Li Dong, Yujia Yao
: Background/Study Context: Socioemotional selectivity theory (SST) states that the positivity effect is a result of older adults' emotion regulation and that older adults derive more emotional satisfaction from prioritizing positive information processing. The authors explored whether the positivity effect appeared when the negative aging stereotype was activated in older adults and also whether the effect differed between mixed and unmixed valence conditions. METHODS: Sixty younger (18-23 years of age) and 60 older (60-87 years of age) adults were randomly assigned to a control group and a priming group, in which the negative aging stereotype was activated...
January 2017: Experimental Aging Research
https://www.readbyqxmd.com/read/28057087/sleep-homeostatic-and-waking-behavioral-phenotypes-in-egr3-deficient-mice-associated-with-serotonin-receptor-5-ht2-deficits
#5
Janne Grønli, William C Clegern, Michelle A Schmidt, Rahmi S Nemri, Michael J Rempe, Amelia L Gallitano, Jonathan P Wisor
STUDY OBJECTIVE: The expression of the immediate early gene early growth response 3 (Egr3) is a functional marker of brain activity including responses to novelty, sustained wakefulness, and sleep. We examined the role of this gene in regulating wakefulness and sleep. METHODS: Electroencephalogram/electromyogram (EEG/EMG) were recorded in Egr3-/- and wild-type (WT) mice during 24 h baseline, 6 h sleep disruption and 6 h recovery. Serotonergic signaling was assessed with 6 h EEG/EMG recordings after injections of nonselective 5-HT2 antagonist (clozapine), selective 5-HT2 antagonists (5-HT2A; MDL100907 and 5-HT2BC; SB206553) and a cocktail of both selective antagonists, administered in a randomized order to each animal...
December 1, 2016: Sleep
https://www.readbyqxmd.com/read/28039375/cholinergic-glutamatergic-and-gabaergic-neurons-of-the-ppt-have-distinct-effects-on-sleep-wake-behavior-in-mice
#6
Daniel Kroeger, Loris L Ferrari, Gaetan Petit, Carrie E Mahoney, Patrick M Fuller, Elda Arrigoni, Thomas E Scammell
: The pedunculopontine tegmental nucleus (PPT) has long been implicated in the regulation of cortical activity and behavioral states, including rapid eye movement (REM) sleep. For example, electrical stimulation of the PPT region during sleep leads to rapid awakening, whereas lesions of the PPT in cats reduce REM sleep. Though these effects have been linked with the activity of cholinergic PPT neurons, the PPT also includes intermingled glutamatergic and GABAergic cell populations, and the precise roles of cholinergic, glutamatergic and GABAergic PPT cell groups in regulating cortical activity and behavioral state remains unknown...
December 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28038367/age-differences-in-gain-and-loss-motivated-attention
#7
Ryan S Williams, Anna Lena Biel, Benjamin J Dyson, Julia Spaniol
Adaptive gain theory (Aston-Jones & Cohen, 2005) suggests that the phasic release of norepinephrine (NE) to cortical areas reflects changes in the utility of ongoing tasks. In the context of aging, this theory raises interesting questions, given that the motivations of older adults differ from those of younger adults. According to socioemotional selectivity theory (Carstensen, Isaacowitz, & Charles, 1999), aging is associated with greater emphasis on emotion-regulation goals, leading older adults to prioritize positive over negative information...
February 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28027920/examining-the-short-term-effects-of-emotion-under-an-adaptation-level-theory-model-of-tinnitus-perception
#8
Mithila Durai, Mary G O'Keeffe, Grant D Searchfield
OBJECTIVES: Existing evidence suggests a strong relationship between tinnitus and emotion. The objective of this study was to examine the effects of short-term emotional changes along valence and arousal dimensions on tinnitus outcomes. Emotional stimuli were presented in two different modalities: auditory and visual. The authors hypothesized that (1) negative valence (unpleasant) stimuli and/or high arousal stimuli will lead to greater tinnitus loudness and annoyance than positive valence and/or low arousal stimuli, and (2) auditory emotional stimuli, which are in the same modality as the tinnitus, will exhibit a greater effect on tinnitus outcome measures than visual stimuli...
December 24, 2016: Hearing Research
https://www.readbyqxmd.com/read/28012091/hypocretins-and-arousal
#9
Shi-Bin Li, William J Giardino, Luis de Lecea
How the brain controls vigilance state transitions remains to be fully understood. The discovery of hypocretins, also known as orexins, and their link to narcolepsy has undoubtedly allowed us to advance our knowledge on key mechanisms controlling the boundaries and transitions between sleep and wakefulness. Lack of function of hypocretin neurons (a relatively simple and non-redundant neuronal system) results in inappropriate control of sleep states without affecting the total amount of sleep or homeostatic mechanisms...
December 24, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28001283/hey-mister-tambourine-man-play-a-drug-for-me-music-as-medication
#10
Robert H Howland
Listening to music may be thought of as noninvasive and nonpharmacological, but music should be considered a drug therapy. Music exposure has measurable neurobiological effects that are linked to systems regulating reward, motivation, and pleasure; stress and arousal; and immunity. Functional neuroimaging and lesion studies demonstrate that music-evoked emotions are associated with modulation of linked limbic and paralimbic brain regions. Some of these regions are involved in reward, motivation, and pleasure, and there are additional projections to brain structures regulating autonomic, emotional, and cognitive function...
December 1, 2016: Journal of Psychosocial Nursing and Mental Health Services
https://www.readbyqxmd.com/read/27998997/differential-functional-connectivity-of-rostral-anterior-cingulate-cortex-during-emotional-interference
#11
Akos Szekely, Rebecca L Silton, Wendy Heller, Gregory A Miller, Aprajita Mohanty
The rostral-ventral subdivision of the anterior cingulate cortex (rACC) plays a key role in the regulation of emotional processing. Although rACC has strong anatomical connections with anterior insular cortex (AIC), amygdala, prefrontal cortex and striatal brain regions, it is unclear whether the functional connectivity of rACC with these regions changes when regulating emotional processing. Furthermore, it is not known whether this connectivity changes with deficits in emotion regulation seen in different kinds of anxiety and depression...
December 20, 2016: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/27998996/effective-amygdala-prefrontal-connectivity-predicts-individual-differences-in-successful-emotion-regulation
#12
Carmen Morawetz, Stefan Bode, Juergen Baudewig, Hauke R Heekeren
The ability to voluntarily regulate our emotional response to threatening and highly arousing stimuli by using cognitive reappraisal strategies is essential for our mental and physical well-being. This might be achieved by prefrontal brain regions (e.g., inferior frontal gyrus, IFG) down-regulating activity in the amygdala. It is unknown, to which degree effective connectivity within the emotion-regulation network is linked to individual differences in reappraisal skills. Using psychophysiological interaction (PPI) analyses of functional magnetic resonance imaging data, we examined changes in inter-regional connectivity between the amygdala and IFG with other brain regions during reappraisal of emotional responses and used emotion regulation success as an explicit regressor...
December 20, 2016: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/27992838/posttraumatic-stress-and-youth-violence-perpetration-a-population-based-cross-sectional-study
#13
M Aebi, M Mohler-Kuo, S Barra, U Schnyder, T Maier, M A Landolt
BACKGROUND: Exposure to trauma was found to increase later violent behaviours in youth but the underlying psychopathological mechanisms are unclear. This study aimed to test whether posttraumatic stress disorder (PTSD) is related to violent behaviours and whether PTSD symptoms mediate the relationship between the number of trauma experiences and violent behaviours in adolescents. METHOD: The present study is based on a nationally representative sample of 9th grade students with 3434 boys (mean age=15...
December 16, 2016: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/27991798/comfortably-numb-and-back-plasma-metabolomics-reveals-biochemical-adaptations-in-the-hibernating-13-lined-ground-squirrel
#14
Angelo D'Alessandro, Travis Nemkov, Lori K Bogren, Sandra L Martin, Kirk C Hansen
Hibernation is an evolutionary adaptation that affords some mammals the ability to exploit the cold to achieve extreme metabolic depression (torpor) while avoiding ischemia/reperfusion or hemorrhagic shock injuries. Hibernators cycle periodically out of torpor, restoring high metabolic activity. If understood at the molecular level, the adaptations underlying torpor-arousal cycles may be leveraged for translational applications in critical fields such as intensive care medicine. Here, we monitored 266 metabolites to investigate the metabolic adaptations to hibernation in plasma from 13-lined ground squirrels (57 animals, 9 time points)...
December 29, 2016: Journal of Proteome Research
https://www.readbyqxmd.com/read/27987373/circadian-regulation-of-mouse-scn-neuronal-states-shapes-responses-to-orexin
#15
Mino D C Belle, Hugh D Piggins
Our knowledge of how circadian and homeostatic brain circuits interact to temporally organize physiology and behavior is limited. Progress has been made with the determination that lateral hypothalamic orexin (OXA) neurons control arousal and appetitive states, while suprachiasmatic nuclei (SCN) neurons function as the master circadian clock. During the day, SCN neurons exhibit heterogeneity in spontaneous resting membrane potential (RMP), with some neurons becoming severely depolarized (hyperexcited) and ceasing to fire action potentials (APs), while other neurons rest at moderate RMP and fire APs...
December 17, 2016: European Journal of Neuroscience
https://www.readbyqxmd.com/read/27978422/the-distinctive-role-of-executive-functions-in-implicit-emotion-regulation
#16
Marco Sperduti, Dominique Makowski, Margherita Arcangeli, Prany Wantzen, Tiziana Zalla, Stéphane Lemaire, Jérôme Dokic, Jérôme Pelletier, Pascale Piolino
Several theoretical models stress the role of executive functions in emotion regulation (ER). However, most of the previous studies on ER employed explicit regulatory strategies that could have engaged executive functions, beyond regulatory processes per se. Recently, there has been renewed interest in implicit forms of ER, believed to be closer to daily-life requirements. While various studies have shown that implicit and explicit ER engage partially overlapping neurocognitive processes, the contribution of different executive functions in implicit ER has not been investigated...
December 12, 2016: Acta Psychologica
https://www.readbyqxmd.com/read/27941497/the-role-of-nociceptive-input-and-tissue-injury-on-stress-regulation-in-borderline-personality-disorder
#17
Franziska Willis, Sarah Kuniss, Nikolaus Kleindienst, Janina Naoum, Sarah Reitz, Sabrina Boll, Martin Bohus, Rolf-Detlef Treede, Ulf Baumgärtner, Christian Schmahl
Approximately 60-90% of patients with Borderline Personality Disorder (BPD) show non- suicidal self-injurious behavior (NSSI) with cutting being the most frequently applied method. One of NSSI's functions is to reduce aversive tension. Previous studies have found a tension-reducing effect of painful tissue injury by an incision. It is still unclear whether this effect is based on the effect of tissue injury or the effect of pain experience, or both. The aim of this study was to determine whether tissue injury leads to a stronger stress reduction than a sole pain stimulus in patients with BPD...
December 7, 2016: Pain
https://www.readbyqxmd.com/read/27940311/behavioural-measures-of-child-s-eating-temperament-and-their-link-with-bmi
#18
Valérie Godefroy, Laura Trinchera, Nicolas Darcel, Natalie Rigal
Rothbart's model of temperament, defined as individual differences in reactivity and self-regulation, has a strong heuristic value with applications in a wide variety of children's outcomes. Our objective was to test Rothbart's model applied to children's food behaviours and BMI outcome through behavioural measures. Our hypotheses, according to Rothbart's model, were as follows: (i) self-regulation in eating modulates appetite reactivity; (ii) appetite reactivity increases the risk of excess BMI, whereas self-regulation in eating limits this risk...
March 1, 2017: Appetite
https://www.readbyqxmd.com/read/27934776/prediction-of-subjective-ratings-of-emotional-pictures-by-eeg-features
#19
Dennis J McFarland, Muhammad A Parvaz, William A Sarnacki, Rita Z Goldstein, Jonathan R Wolpaw
OBJECTIVE: Emotion dysregulation is an important aspect of many psychiatric disorders. Brain-computer interface (BCI) technology could be a powerful new approach to facilitating therapeutic self-regulation of emotions. One possible BCI method would be to provide stimulus-specific feedback based on subject-specific electroencephalographic (EEG) responses to emotion-eliciting stimuli. APPROACH: To assess the feasibility of this approach, we studied the relationships between emotional valence/arousal and three EEG features: amplitude of alpha activity over frontal cortex; amplitude of theta activity over frontal midline cortex; and the late positive potential over central and posterior mid-line areas...
December 9, 2016: Journal of Neural Engineering
https://www.readbyqxmd.com/read/27932994/comparative-mrna-and-microrna-profiling-during-acute-myocardial-infarction-induced-by-coronary-occlusion-and-ablation-radio-frequency-currents
#20
Eduardo T Santana, Regiane Dos Santos Feliciano, Andrey J Serra, Eduardo Brigidio, Ednei L Antonio, Paulo J F Tucci, Lubov Nathanson, Mariana Morris, José A Silva
The ligation of the left anterior descending coronary artery is the most commonly used experimental model to induce myocardial infarction (MI) in rodents. A high mortality in the acute phase and the heterogeneity of the size of the MI obtained are drawbacks recognized in this model. In an attempt to solve the problem, our group recently developed a new MI experimental model which is based on application of myocardial ablation radio-frequency currents (AB-RF) that yielded MI with homogeneous sizes and significantly reduce acute mortality...
2016: Frontiers in Physiology
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