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Epigenetic pathways in PTSD: How traumatic experiences leave their signature on the genome

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889194582 Year: Pages: 158 DOI: 10.3389/978-2-88919-458-2 Language: English
Publisher: Frontiers Media SA
Subject: Psychiatry --- Medicine (General)
Added to DOAB on : 2016-02-05 17:24:33
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This research topic focuses on epigenetic components of PTSD. Epigenetic mechanisms are a class of molecular mechanisms by which environmental influences, including stress, can interact with the genome to have long-term consequences for brain plasticity and behavior. Articles herein include empirical reports and reviews that link stress and trauma with epigenetic alterations in humans and animal models of early- or later-life stress. Themes present throughout the collection include: DNA methylation is a useful biomarker of stress and treatment outcome in humans; epigenetic programming of stress-sensitive physiological systems early in development confers an enhanced risk on disease development upon re-exposure to trauma or stress; and, long-lived fear memories are associated with epigenetic alterations in fear memory and extinction brain circuitry.

Keywords

DNA Methylation --- Histones --- miRNA --- stress --- Fear --- PTSD

Neural processing of emotion in multimodal settings

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889194148 Year: Pages: 274 DOI: 10.3389/978-2-88919-414-8 Language: English
Publisher: Frontiers Media SA
Subject: Neurology --- Science (General)
Added to DOAB on : 2015-12-10 11:59:06
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Our everyday life is characterized by a multitude of emotionally relevant cues that we perceive and communicate via various sensory channels. This does not only encompass the obvious cases of auditory and visual modalities, but also olfactory, gustatory, and even tactile stimuli. Any kind of emotional situation in a natural setting is usually a multimodal experience: A friend welcomes us with warm words, a smile, and a happy voice; the sight of our favourite food is accompanied by a seductive smell and a delicious taste; the thrill of watching an exciting movie scene is intensified by a gripping soundtrack. In these situations, the signals from various senses do not stand on their own; they interact and create a unified emotional experience. Recent neuroscientific research has begun to accommodate this inherent multimodality of emotions in natural situations by studying the interaction of affectively relevant information from more than one sensory channel. Fascinating new aspects emerge concerning the neurobiology of emotion processing, and there is evidence that integrating emotional cues from various sources invokes brain processes that go beyond the well-known patterns observed during unimodal stimulation. The aim of this volume is to present novel and interesting studies dealing with the multimodality of emotions and their neural processing. This includes findings from novel paradigms beyond the classical stimulus-response pattern, fascinating new insights into the interaction of the chemical senses, new analysis methods, comprehensive reviews of selected topics, multimodality in social interactions, and clinical perspectives. Taken together, the studies of this volume thus help us to better understand the interplay of various senses in our daily emotional experiences.

Extinction Learning from a Mechanistic and Systems Perspective

Authors: --- ---
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889199082 Year: Pages: 277 DOI: 10.3389/978-2-88919-908-2 Language: English
Publisher: Frontiers Media SA
Subject: Neurology --- Science (General)
Added to DOAB on : 2016-01-19 14:05:46
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Throughout their lifetime, animals learn to associate stimuli with their consequences. Following memory acquisition and consolidation, circumstances may arise that necessitate that initially learned behaviour is no longer relevant. The ensuing process is called extinction learning and involves a novel and complex learning procedure that involves a large number of neural entities. While the neural fundaments of the initial acquisition are well studied, our understanding of the behavioural and neural basis of extinction is still limited and derives mostly from rodent data acquired through fear conditioning paradigms. Fear conditioning and extinction in rodents is a spectacularly successful paradigm within behavioral neuroscience. However, in recent years, new approaches have been emerging that examine the mechanisms of extinction learning in different setting that also involve appetitive models, a broader comparative perspective, a focus on other brain systems, an examination of hormonal factors, and conditioning of immune responses. Only a broader analysis of the neural fundaments of extinction learning will finally uncover shared and distinct mechanisms that underlie extinction learning in different functional systems. The papers compiled in this Research Topic offer new and valuable insights into the mechanisms and functional implementation of extinction learning at its different levels of complexity, and form the basis for new concepts and research ideas in this field.

Emotional Modulation of the Synapse

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889196067 Year: Pages: 135 DOI: 10.3389/978-2-88919-606-7 Language: English
Publisher: Frontiers Media SA
Subject: Science (General) --- Neurology
Added to DOAB on : 2016-08-16 10:34:25
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Highly emotional events tend to be well remembered. The adaptive value in this is clear – those events that have a bearing on survival should be stored for future use as long-term memories whereas memories of inconsequential events would not as likely contribute to future survival. Enduring changes in the structure and function of synapses, neural circuitry, and ultimately behavior, can be modulated by highly aversive or rewarding experiences. In the last decade, the convergence of cellular, molecular, and systems neuroscience has produced new insights into the biological mechanisms that determine whether a memory will be stored for the long-term or lost forever. This Research Topic brings together leading experts, who work at multiple levels of analysis, to reveal recent discoveries and concepts regarding the synaptic mechanisms of consolidation and extinction of emotionally arousing memories.

Individual Differences: From Neurobiological Bases to New Insight on Approach and Avoidance Behavior

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889197156 Year: Pages: 110 DOI: 10.3389/978-2-88919-715-6 Language: English
Publisher: Frontiers Media SA
Subject: Neurology --- Science (General)
Added to DOAB on : 2016-04-07 11:22:02
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The superordinate division of emotions is distributed along a bipolar dimension of affective valence, from approaching rewarding situations to avoiding punitive situations. Avoiding and approaching behaviors determine the disposition to the primary emotions of fear and attachment and the behavioral responses to the environmental stimuli of danger, novelty and reward. Approach or avoidance behaviors are associated with the brain pathways controlling cognitive and attentional function, reward sensitivity and emotional expression, involving prefrontal cortex, amygdala, striatum and cerebellum. Individual differences in approach and avoidance behavior might be modulated by normal variance in the level of functioning of different neurotransmitter systems, such as dopaminergic, serotoninergic, noradrenergic and endocannabinoid systems as well as many peptides such as corticotropin releasing hormone. These substances act at various central target areas to increase intensity of appetitive or defensive motivation. Physiologically, personality temperaments of approach and avoidance are viewed as instigators of propensity. They produce immediate affective, cognitive and behavioral inclinations in response to stimuli and orient individuals across domains and situations in a consistent fashion. Although the action undoubtedly emerges directly from these temperamental proclivities, ultimate behavioral outcomes are often a function of the integration among goal pursuit, self-regulation, and temperament trait. Defective coping strategies to aversive or rewarding stimuli characterize the patho-physiology of anxiety- and stress-related disorders or compulsive and addiction behaviors, respectively. Individuals with neuropsychiatric symptoms such as depression, suicidal behavior, bipolar mania, schizophrenia, substance use disorders, pathological gambling and anxiety disorders have scores which fall at the extreme tails of the normal distribution for a specific temperamental trait. The present Research Topic on the individual differences in emotional and motivational processing emphasizes the link between neuronal pattern and behavioral expression. The Topic includes experimental and clinical researches addressing the individual differences related to approach and avoidance and their behavioral characterization, structural and neurochemical profiles, synaptic connections, and receptor expressions. Studies are organized in a framework that puts in evidence the phenotypic expression and neurobiological patterns characterizing the individual differences and their biological variance.

Community-Oriented Policing and Technological Innovations

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Book Series: SpringerBriefs in Policing ISSN: 2194-6213 ISBN: 9783319892931 9783319892948 Year: Pages: 131 DOI: https://doi.org/10.1007/978-3-319-89294-8 Language: English
Publisher: Springer Grant: European Commission
Subject: Social and Public Welfare
Added to DOAB on : 2018-06-22 15:58:56
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This Brief presents new approaches and innovative challenges to address bringing technology into community-oriented policing efforts. “Community-oriented policing” is an approach that encourages police to develop and maintain personal relationships with citizens and community organizations. By developing these partnerships, the goal is to enhance trust and legitimacy of police by the community (and vice versa), and focus on engaging the community crime prevention and detection efforts for sustainable, long-term crime reduction.The contributions to this volume emphasize how technological innovations can advance community-oriented policing goals, such as:-Strengthening community policing principles through effective and efficient tools, procedures and approaches- Accelerating communication between citizens and police forces- Early identification, timely intervention, as well as better crime reporting, identification of risks, unreported and undiscovered crime through the communityContributions to this volume were developed out of the Next Generation Community Policing (NGCP) International Conference was co-organized by nine contributing research and development projects, funded by the Horizon 2020 SECURITY Program of the European Commission. It will be of interest to researchers in criminology and criminal justice, as well as related fields such as sociology, public health, security, IT and public policy.

Societal Implications of Community-Oriented Policing and Technology

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Book Series: SpringerBriefs in Policing ISSN: 2194-6213 ISBN: 9783319892962 9783319892979 Year: Pages: 102 DOI: https://doi.org/10.1007/978-3-319-89297-9 Language: English
Publisher: Springer Grant: European Commission; Trilateral Research Ltd
Subject: Social and Public Welfare
Added to DOAB on : 2018-07-02 13:00:44
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This Brief presents new approaches and innovative challenges to address bringing technology into community-oriented policing efforts. “Community-oriented policing” is an approach that encourages police to develop and maintain personal relationships with citizens and community organizations. By developing these partnerships, the goal is to enhance trust and legitimacy of police by the community (and vice versa), and focus on engaging the community crime prevention and detection efforts for sustainable, long-term crime reduction.The contributions to this volume emphasize the societal implications of new technologies for community-oriented policing goals, such as:-Strengthening community policing principles through strengthed community feeling and lower feeling of insecurity- Reducing the fear of crime and enhancing the perception of security in large, urban environments-Enhancing citizens feelings' of empowerment, belonging, and collective efficacyContributions to this volume were developed out of the Next Generation Community Policing (NGCP) International Conference was co-organized by nine contributing research and development projects, funded by the Horizon 2020 SECURITY Program of the European Commission. It will be of interest to researchers in criminology and criminal justice, as well as related fields such as sociology, public health, security, IT and public policy.

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