mood 1 Flashcards
Emotional Regulation
- Ability to manage - emotional responses to environmental stimuli that are perceived as aversive or negative
- Disruption can lead to anxiety or mood disorder
Depression
-Pervasive, debilitating
mental illness that touches all parts of society
-Creates serious negative impact on functioning and interpersonal relationships
Anxiety
-Helps individuals adapt to perceived challenge or threat
-Sustained apprehension; avoidance patterns
Can severely limit social interaction and relationships
Bipolar disorders
- Manic
- Hypomanic
- Depressive episodes
Pathophysiology of Depression
Neurotransmitters and intracellular mechanisms that alter gene expression
Stress response system
Development of anxiety
Sympathetic nervous system activation
Neurotransmitters
Emotional Regulation
envolves several bodily systems:
Neurotransmitters associated with anxiety & depressive states
-Immunologic responses and inflammation
Emotional states influence immunologic responses
Response engenders state of stress
- If coping mechanisms fail, risk for maladaptive emotional responses such as depression
- Manifest clinically through bodily symptoms
Anxiety
State of apprehension mixed with fear or worry
-Real or perceived threat
-Somatic responses:
Palpitations, Sweating, Rapid breathing, Nausea
Anxiety Types
Generalized anxiety disorder (GAD)
Social anxiety disorder (SAD)
Panic disorder
Anxiety Risk Factors
- genetic
- familial
- environmental
Fear-centered anxiety disorders
Panic disorder & social anxiety disorder
Situation associated with overwhelming negative consequences
Mediating neural structures that process threat functioning sub optimally
Worry-centered anxiety disorders
Functional disruptions in neuronal circuitry
GAD
-Increased activity in cortical-striatal-thalamic pathway
Anxiety- Comorbidities
Depression
Panic disorder: respiratory disease, vestibular dysfunction, thyroid problems, cardiac disease
GAD: chronic pain, medically unexplained somatic symptoms, sleep disorders
Anxiety- genetic vulnerability
Variation of 5-HT transporter gene (SLC6A4) called 5-HTTLPR
Selective serotonin reuptake inhibitors (SSRIs)
Anxiety- Classic fear conditioning
Consolidation: amygdala; long-term memory
Reconsolidation: stronger fear memory
Medications to disrupt chemicals and receptors involved in processes
Neuroanatomic Pathways in Anxiety
Conditioned stimulus
-Stimulus read by thalamus -> Amygdala & Visual cortex
Amygdala
- confers significance on stimuli (thalamus or hypothalamus)
- holds emotional memories and threat assessment
- controls autonomic responces
Prefrontal cortex
- fear learning and extinction
- registers and assigns meaning to emotions
- weights action vs potential reward
- balances emotion, thought and controlling attention
Caudate nucleus
- orchestrates action-reward sequencing
- drives behavior with recall of past successful outcomes
Neuro-chemical and -transmitter
Neural structures correlated with neurotransmitters, neurochemicals, hormones
GABA-BZD-receptor system
Gamma-aminobutyric acid (GABA)
-Primary inhibitory amino acid neurotransmitter
Benzodiazepines (BZDs)
-Partners with GABA in maintaining mind–body homeostasis
Glutamate
- Immediate precursor to GABA
- Extinction
Norepinephrine ( NE)
- increases during stages of anxiety
- results in downregulation of auto receptor ( alpha-2)
- increased autonomic arousal
relationships between NE and BDZ receptors
Serotonic (5-HT)
- decreased 5- HT during states of anxiety
- action related to fear learning
- —- occurs through effects on NE and DA
Dopamine (DA)
- increased DA during acute stress
- involves impairment in DA reward pathways
- phobic responses