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Different states of consciousness

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https://www.readbyqxmd.com/read/28097179/the-comparison-of-two-types-of-relaxation-techniques-on-postoperative-state-anxiety-in-candidates-for-the-mastectomy-surgery-a-randomized-controlled-clinical-trial
#1
Zohreh Parsa Yekta, Fatemeh Sadeghian, Taraneh Taghavi Larijani, Abbas Mehran
BACKGROUND: Anxiety among patients after surgery can affect their physiological and psychological well-being. The aim of this study was to investigate and compare the effects of Benson's relaxation and rhythmic breathing techniques on postoperative anxiety in candidates for the mastectomy surgery. METHODS: This randomized controlled clinical trial study was conducted with ninety patients in 2013. The patients were hospitalized for the mastectomy surgery in three surgical wards in a teaching hospital, Tehran, Iran...
January 2017: International Journal of Community Based Nursing and Midwifery
https://www.readbyqxmd.com/read/28093763/where-east-meets-west-in-the-house-of-individuation
#2
Murray Stein
The psychological process of individuation as experienced in Jungian work may lead to states of consciousness that resemble advanced spiritual developments across religious traditions and cultures. This is where Westerners may reach a common ground with the East. In the essentials and with respect to the final goal there is little difference among the many ways to the self, even if the cultural features in the landscape are disparate. In late stage Jungian analysis and individuation and in what Erich Neumann calls 'centroversion', the personal and the impersonal aspects of the personality accumulate around the ego-self axis to form a composite identity...
February 2017: Journal of Analytical Psychology
https://www.readbyqxmd.com/read/28093358/mapping-the-functional-connectome-traits-of-levels-of-consciousness
#3
Enrico Amico, Daniele Marinazzo, Carol Di Perri, Lizette Heine, Jitka Annen, Charlotte Martial, Mario Dzemidzic, Murielle Kirsch, Vincent Bonhomme, Steven Laureys, Joaquín Goñi
Examining task-free functional connectivity (FC) in the human brain offers insights on how spontaneous integration and segregation of information relate to human cognition, and how this organization may be altered in different conditions, and neurological disorders. This is particularly relevant for patients in disorders of consciousness (DOC) following severe acquired brain damage and coma, one of the most devastating conditions in modern medical care. We present a novel data-driven methodology, connICA, which implements Independent Component Analysis (ICA) for the extraction of robust independent FC patterns (FC-traits) from a set of individual functional connectomes, without imposing any a priori data stratification into groups...
January 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/28092321/dexmedetomidine-disrupts-the-local-and-global-efficiencies-of-large-scale-brain-networks
#4
Javeria A Hashmi, Marco L Loggia, Sheraz Khan, Lei Gao, Jieun Kim, Vitaly Napadow, Emery N Brown, Oluwaseun Akeju
BACKGROUND: A clear understanding of the neural basis of consciousness is fundamental to research in clinical and basic neuroscience disciplines and anesthesia. Recently, decreased efficiency of information integration was suggested as a core network feature of propofol-induced unconsciousness. However, it is unclear whether this finding can be generalized to dexmedetomidine, which has a different molecular target. METHODS: Dexmedetomidine was administered as a 1-μg/kg bolus over 10 min, followed by a 0...
January 16, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28080089/what-you-like-is-what-you-try-to-get-attitudes-toward-emotions-and-situation-selection
#5
Noam Markovitch, Liat Netzer, Maya Tamir
Why do people expose themselves to certain emotional stimuli and avoid others? We propose that what people want to feel is linked to attitudes toward emotions. In 3 studies, we show that individuals with more (vs. less) negative attitudes toward an emotion were more (vs. less) likely to avoid stimuli that induce that emotion. People who evaluated disgust (or joy) less favorably than others were less likely to expose themselves to disgusting (or joyful) pictures (Study 1). These links were emotion-specific and could not be explained by differences in state or trait emotion (Study 2) or in emotional reactivity (Study 3)...
January 12, 2017: Emotion
https://www.readbyqxmd.com/read/28078839/widespread-membrane-potential-changes-and-cardiorespiratory-synchronization-involved-in-anxiety-and-sleep-wake-transitions
#6
R Jerath, S M Cearley, M Jensen
Located within the ascending reticular activating system are nuclei which release neurotransmitters such as acetylcholine, serotonin, dopamine, and norepinephrine. These nuclei have widespread projections that extend into the limbic system and throughout cortex. Activation of these neurotransmitters during awake states leads to arousal, while inhibition leads to the loss of consciousness experienced during slow-wave sleep. Previously, we proposed a mechanism in which cardiorespiratory synchronization may underlie the widespread hyperpolarization that occurs throughout the brain during slow-wave sleep...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28074801/delirium-after-cardiac-surgery-a-pilot-study-from-a-single-tertiary-referral-center
#7
Ashok K Kumar, Aveek Jayant, V K Arya, Rohan Magoon, Ridhima Sharma
BACKGROUND: Advances in cardiac surgery has shifted paradigm of management to perioperative psychological illnesses. Delirium is a state of altered consciousness with easy distraction of thoughts. The pathophysiology of this complication is not clear, but identification of risk factors is important for positive postoperative outcomes. The goal of the present study was to prospectively identify the incidence, motoric subtypes, and risk factors associated with development of delirium in cardiac surgical patients admitted to postoperative cardiac intensive care, using a validated delirium monitoring instrument...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28025814/phenomenology-structure-and-dynamic-of-psychedelic-states
#8
Katrin H Preller, Franz X Vollenweider
Classic serotonergic hallucinogens or psychedelics produce an Altered States of Consciousness (ASC) that is characterized by profound alterations in sensory perception, mood, thought including the perception of reality, and the sense of self. Over the past years, there has been considerable progress in the search for invariant and common features of psychedelic states. In the first part of this review, we outline contemporary approaches to characterize the structure of ASCs by means of three primary etiology-independent dimensions including Oceanic Boundlessness, Anxious Ego Dissolution, and Visionary Restructuralization as well as by 11 lower order factors, all of which can be reliably measured by the Altered State of Consciousness questionnaire (APZ-OAV)...
December 27, 2016: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/27978422/the-distinctive-role-of-executive-functions-in-implicit-emotion-regulation
#9
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/27926446/how-motivation-and-reward-learning-modulate-selective-attention
#10
A Bourgeois, L Chelazzi, P Vuilleumier
Motivational stimuli such as rewards elicit adaptive responses and influence various cognitive functions. Notably, increasing evidence suggests that stimuli with particular motivational values can strongly shape perception and attention. These effects resemble both selective top-down and stimulus-driven attentional orienting, as they depend on internal states but arise without conscious will, yet they seem to reflect attentional systems that are functionally and anatomically distinct from those classically associated with frontoparietal cortical networks in the brain...
2016: Progress in Brain Research
https://www.readbyqxmd.com/read/27911815/nicotinic-receptors-in-mouse-prefrontal-cortex-modulate-ultraslow-fluctuations-related-to-conscious-processing
#11
Fani Koukouli, Marie Rooy, Jean-Pierre Changeux, Uwe Maskos
The prefrontal cortex (PFC) plays an important role in cognitive processes, including access to consciousness. The PFC receives significant cholinergic innervation and nicotinic acetylcholine receptors (nAChRs) contribute greatly to the effects of acetylcholine signaling. Using in vivo two-photon imaging of both awake and anesthetized mice, we recorded spontaneous, ongoing neuronal activity in layer II/III in the PFC of WT mice and mice deleted for different nAChR subunits. As in humans, this activity is characterized by synchronous ultraslow fluctuations and neuronal synchronicity is disrupted by light general anesthesia...
December 20, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27910995/a-diffusion-tensor-magnetic-resonance-imaging-study-of-paediatric-patients-with-severe-non-traumatic-brain-injury
#12
Erika Molteni, Maria A Rocca, Sandra Strazzer, Elisabetta Pagani, Katia Colombo, Filippo Arrigoni, Giacomo Boffa, Massimiliano Copetti, Valentina Pastore, Massimo Filippi
AIM: In this observational study using 3T magnetic resonance imaging (MRI) and diffusion tensor, we investigated the differential effects of pathology, stage of disease, state of consciousness, and aetiology on the modifications of supra- and infra-tentorial white matter tracts and their correlations with clinical scales in paediatric patients with severe non-traumatic brain injury. METHOD: Diffusion tensor magnetic resonance imaging (DT-MRI) was obtained from seven children with unresponsive wakefulness syndrome (UWS; five males, two females; age at event 5y; standard deviation [SD] 2y 1mo), six children in a minimally conscious state (MCS; three males, three females; age at event 5y 10mo; SD 5y), and 10 healthy children as controls(two males, eight females; age at study 10y 10mo; SD 2y 10mo)...
February 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/27903341/-the-application-of-conscious-sedation-with-a-small-dose-of-dexmedetomidine-and-sufentanil-in-elderly-patients-undergoing-multiple-intestinal-polyps-resection
#13
C M Shi, Y D Zhou, M Xu, X D Wang, L M Meng, X J Liu, X Y Guo
Objective: To explore the effectiveness and feasibility of conscious sedation with a low dose of dexmedetomidine and sufentanil during multiple intestinal polyps resection in elderly patients. Methods: Sixty elderly patients who underwent multiple intestinal polyps resection in Peking University Third Hospital from Janurary to May 2016 were randomly divided into dexmedetomidine group (D group, n=30) and propofol group (P group, n=30). There were 28 males and 32 females with a mean age of (70.4±4.5) years old (range: 65-80 years old)...
November 22, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27891111/editorial-brain-oscillations-and-predictive-coding-in-the-context-of-different-conscious-states-and-sleep-wake-cycle-implications-for-decision-making-and-psychopathology
#14
EDITORIAL
https://www.readbyqxmd.com/read/27887735/influence-of-general-anaesthesia-on-the-brainstem
#15
L Bosch, J Fernández-Candil, A León, P L Gambús
The exact role of the brainstem in the control of body functions is not yet well known and the same applies to the influence of general anaesthesia on brainstem functions. Nevertheless in all general anaesthesia the anaesthesiologist should be aware of the interaction of anaesthetic drugs and brainstem function in relation to whole body homeostasis. As a result of this interaction there will be changes in consciousness, protective reflexes, breathing pattern, heart rate, temperature or arterial blood pressure to name a few...
November 22, 2016: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/27882170/acute-encephalitis-with-refractory-repetitive-partial-seizures-a-case-report-and-literature-review
#16
Bin Zhang, Lin Wang
A male 46 year-old patient was admitted to the Emergency Intensive Care Unit of Qinghai Provincial People's Hospital (Xining, China) in December 2008 with complaints of a headache and fever that had lasted for three days. In addition, the patient had experienced two general convulsions accompanied with consciousness disorders for 7 h. Although the patient's clinical manifestations, laboratory tests and cerebrospinal fluid examinations were consistent with numerous features associated with acute encephalitis, the patient's clinical course was different to that of acute encephalitis, and the prognosis was poor...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27881778/attentive-motion-discrimination-recruits-an-area-in-inferotemporal-cortex
#17
Heiko Stemmann, Winrich A Freiwald
: Attentional selection requires the interplay of multiple brain areas. Theoretical accounts of selective attention predict different areas with different functional properties to support endogenous covert attention. To test these predictions, we devised a demanding attention task requiring motion discrimination and spatial selection and performed whole-brain imaging in macaque monkeys. Attention modulated the early visual cortex, motion-selective dorsal stream areas, the lateral intraparietal area, and the frontal eye fields...
November 23, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27866005/interoception-and-gender-what-aspects-should-we-pay-attention-to
#18
Aida Grabauskaitė, Mindaugas Baranauskas, Inga Griškova-Bulanova
Interoception is involved in both somatic and mental disorders with different prevalence between genders; however, gender differences are often neglected. To examine the potential gender differences in interoceptive awareness, we recruited 376 healthy subjects (51% males, aged 17-30years), to fill in the Multidimensional Assessment of Interoceptive Awareness (MAIA). Of that sample, in a subgroup of 40 subjects (50% males), interoceptive accuracy was assessed by heartbeat counting task (HCT). The results on interroceptive awareness suggest that females tendto notice bodily sensations more often, better understand relations between bodily sensations and emotional states, worry or experience more emotional distress with sensations of pain or discomfort and see body as less safe...
November 17, 2016: Consciousness and Cognition
https://www.readbyqxmd.com/read/27858712/self-consciousness-deficits-in-alzheimer-s-disease-and-frontotemporal-dementia
#19
Eva Ma Arroyo-Anlló, Adèle Turpin Bouston, Marie-Noëlle Fargeau, Begoña Orgaz Baz, Roger Gil
Self-consciousness (SC) is multifaceted and considered to be the consciousness of one's own mental states. The main aim of this paper is to compare SC in patients with Alzheimer's disease (AD) and behavioral variant frontotemporal dementia (bvFTD). Three groups (control and patient groups) of 23 subjects each were assessed using an SC questionnaire. Both types of dementia clearly induce an alteration of SC. The bvFTD group showed a greater impairment in SC than the AD and control groups. The SC score was strongly associated with frontal functions...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27856683/the-challenging-experience-questionnaire-characterization-of-challenging-experiences-with-psilocybin-mushrooms
#20
Frederick S Barrett, Matthew P Bradstreet, Jeannie-Marie S Leoutsakos, Matthew W Johnson, Roland R Griffiths
Acute adverse psychological reactions to classic hallucinogens ("bad trips" or "challenging experiences"), while usually benign with proper screening, preparation, and support in controlled settings, remain a safety concern in uncontrolled settings (such as illicit use contexts). Anecdotal and case reports suggest potential adverse acute symptoms including affective (panic, depressed mood), cognitive (confusion, feelings of losing sanity), and somatic (nausea, heart palpitation) symptoms. Responses to items from several hallucinogen-sensitive questionnaires (Hallucinogen Rating Scale, the States of Consciousness Questionnaire, and the Five-Dimensional Altered States of Consciousness questionnaire) in an Internet survey of challenging experiences with the classic hallucinogen psilocybin were used to construct and validate a Challenging Experience Questionnaire...
December 2016: Journal of Psychopharmacology
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