نتایج جستجو برای: fear response

تعداد نتایج: 1015934  

2015
Susan Sangha

Fear inhibition learning induces plasticity and remodeling of circuits within the amygdala. Most studies examine these changes in nondiscriminative fear conditioning paradigms. Using a discriminative fear, safety, and reward conditioning task, Sangha et al. (2013) have previously reported several neural microcircuits within the basal amygdala (BA) which discriminate among these cues, including ...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2004
Ja Wook Koo Jung-Soo Han Jeansok J Kim

In the fear conditioning literature, it is generally hypothesized that neurons in the basolateral amygdalar complex (BLA) (lateral and basal nuclei) support the formation of conditioned fear memory and project to neurons in the central nucleus (CeA) for the expression of conditioned fear responses. According to this serial processing-transmission view, damage to either BLA or CeA would comparab...

Journal: :Neuro endocrinology letters 2002
Kerstin Ackerl Michaela Atzmueller Karl Grammer

In this study we tried to find out if fear can be detected from human body odours. Female subjects wore under-arm axillary pads while watching a terrifying film. Saliva cortisol samples were taken before and after the film presentation as a hormonal measure for the fear response. The fear experience itself was measured by Spielberger's State-Trait Anxiety Inventory. A "neutral" film, shown one ...

Journal: :Studies in Ethnicity and Nationalism 2023

Abstract Taking document analysis as its method, this paper examines the Tibetans’ response to Chinese state nationalism. Due fear of political secession, government has stayed silent about right self‐determination and subjected regional ethnic autonomy centralised system. The authorities continue dismiss nationalist struggles an imported foreign design warn international community not sympathi...

2014
Michael L. Meier Nuno M. P. de Matos Mike Brügger Dominik A. Ettlin Nenad Lukic Marcus Cheetham Lutz Jäncke Kai Lutz

Experimental fear conditioning in humans is widely used as a model to investigate the neural basis of fear learning and to unravel the pathogenesis of anxiety disorders. It has been observed that fear conditioning depends on stimulus salience and subject vulnerability to fear. It is further known that the prevalence of dental-related fear and phobia is exceedingly high in the population. Dental...

2013
Nicholas V. Karayannis Rob J. E. M. Smeets Wolbert van den Hoorn Paul W. Hodges

BACKGROUND Psychological features have been related to trunk muscle activation patterns in low back pain (LBP). We hypothesised higher pain-related fear would relate to changes in trunk mechanical properties, such as higher trunk stiffness. OBJECTIVES To evaluate the relationship between trunk mechanical properties and psychological features in people with recurrent LBP. METHODS The relatio...

Journal: :Veterinary journal 2008
Nina R Cracknell Daniel S Mills

Seventy-five dogs that showed a fear response to fireworks participated in a double-blinded, placebo-controlled clinical trial to assess the efficacy of a homeopathic remedy for the alleviation of their behavioural signs. Dogs were randomly assigned to one of two treatments; the homeopathic treatment or the placebo treatment. At the baseline assessments the owners identified the behavioural sig...

Journal: :Developmental neuropsychology 2014
Rebecca J Brooker Kristin A Buss

We investigated associations between early fearfulness and error-related negativity (ERN) in preschoolers. Children were classified as low, moderate, or high in fearfulness based on observations at age 2 years. ERN was measured at age 4.5 years. ERN was visible in preschoolers who were moderate or high in fear during toddlerhood, but was characterized differently in children based on associatio...

Journal: :Learning & memory 2004
Karyn M Myers Michael Davis

The neural mechanisms of fear suppression most commonly are studied through the use of extinction, a behavioral procedure in which a feared stimulus (i.e., one previously paired with shock) is nonreinforced repeatedly, leading to a reduction or elimination of the fear response. Although extinction is perhaps the most convenient index of fear inhibition, a great deal of behavioral work suggests ...

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