Background Anesthetics aim to prevent memory of unpleasant experiences. The amygdala and dorsal anterior cingulate cortex participate in forging emotional valence-driven formation. It was hypothesized that this circuitry maintains its role under sedation. Methods Two nonhuman primates underwent aversive tone–odor conditioning sedative states induced by ketamine or midazolam (1 8 0.1 0.8 mg/kg, ...

Background Research into the emotional health of older adults, as it relates to brain network function, lags research cognitive health, despite importance quality life. Here, we examine associations between three summary scores from NIH Toolbox Emotion Battery (NIHTB-EB) – negative affect, social satisfaction, and psychological well-being their with intrinsic functional connectivity within syst...

Anxiety is an emotion characterized by an unpleasant manner of inner distress, often accompanied by nervous behavior. Anxiety is related to the particular behaviors of fight or flight responses. The amygdala, the insula and anterior cingulate cortex seem to be critical, and all three have been referred to as the fear network .The amygdala which plays a fundamental role in neural network of fear...

introduction: aggressive behavior is a major issue in the field of mental health. pharmacotherapy is often used for the treatment of violent individuals. a neurochemical system most consistently linked with aggression is the gabaergic system. the aim of the present investigation was to examine the effect of muscimol (gabaa agonist) 250 and 500 ng/rat and picrotoxin (gabaa antagonist) 1.5 and 3 ...

Introduction: Considering the antiepileptogenic effects of repeated transcranial magnetic stimulation (rTMS), the effect of rTMS applied during amygdala kindling on spontaneous activity of hippocampal CA1 pyramidal neurons was investigated. Materials and Methods: A tripolar electrode was inserted in basolateral amygdala of Male Wistar rats. After a recovery period, animals received daily kindl...

The amygdala is critical for the production of appropriate responses towards emotional or stressful stimuli. It has a characteristic neuronal activation pattern to acute stressors. Chronic pain and stress have each been shown independently modulate activity amygdala. Few studies investigated effect injury, on stress. This study effects neuropathic injury response an restraint constriction right...

To confirm that an increase in blood pressure induced by ketamine is mediated through the central nervous system, we examined effect of ketamine, applied directly to amygdala, on pressure. Six male Sprague-Dawley rats were used study. Under head-restrained and unanesthetized condition, 0.2 μl (5 mg/ml) was injected around amygdala at a flow rate μl/min glass pipette, recorded while monitoring s...

Temporal epilepsy is a common neurological disorder that begins before adulthood. Two -way factors in causing epilepsy and continuing attacks can be inflammation that is caused by immune system and infection. The hippocampus and amygdala are part of a limbic system that relies on memory and emotional regulation. The purpose of this study was to review the effect of epileptic-induced inflammatio...

Objective(s): To investigate the effects of paeoniflorin (PEF) on the hypothalamic-pituitary-adrenal (HPA) axis feedback function of post-traumatic stress disorder (PTSD). cSingle-prolonged stress (SPS) was used to establish a PTSD-like rat model. The contents of plasma corticosterone (CORT), adrenocorticotropin hormone (ACTH) and cortic...

Amygdala volume and face activation activity have been linked to social network size. In the current study, these relationships were examined through analysis of Magnetic Resonance Imaging survey data 116 subjects, with a more detailed smaller sub-sample 20 subjects. Amygdalae structural volumes analyzed using Freesurfer, functional was Statistical Parametric Mapping, ultra-high-resolution susc...