Lecutre 5: Anxiety Disorders Part 1 Flashcards

1
Q

What are some of the biggest differences between plants and animals?

A

Movement!

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2
Q

What do you need to find in an ancestral environment? List some examples!

A

Water, food, available territory, shelter, mates

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3
Q

To find survival items our brain has a ______ system

A

Approach system!

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4
Q

What do you need to avoid in an ancestral environment? List as many as you can!

A
  1. Predators
  2. Snakes
  3. Hostile members of own species
  4. Freezing
  5. Overheating
  6. Deadly falls
  7. Drowning
  8. Toxins
  9. Being banished from the group
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5
Q

To successfully avoid harmful things in the environment our brain has a _____ system

A

Threat system

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6
Q

Threat system is a cortico-limbic neural circuitry that mediates (5)

A

A cortico-limbic neural circuitry that mediates
1. Fear
2. Anxiety
3. Conditioning
4. Avoidance behavior
5. Behavioral inhibition

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7
Q

Fear, what does it signal?

A

Fear signals PERCEIVED threats eg. Fear of predators/heights

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8
Q

Anxiety, what does it signal?

A

Anxiety signals POTENTIAL threats eg. Health anxiety, social anxiety, attachment anxiety

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9
Q

The cortico-limbic neural circuitry mediates conditioning, specifically:

A

Operant and Respondent/Classical conditioning

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10
Q

The cortico-limbic neural circuitry that mediates avoidance behavior including:

A

Commission of action (eg. Fleeing) intended to prevent perceived/anticipated threats

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11
Q

The cortico-limbic neutral mediates behavioral inhibition which includes

A

Omission of action (eg. Freezing) intended to prevent perceiving or anticipated threats

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12
Q

Where is the threat system localized?

A

In parts of the limbic system and prefrontal cortex

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13
Q

Amygdala is part of the ____ system

A

Limbic!

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14
Q

The amygdala neurons use ______ as a neurotransmitter?

A

Serotonin!

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15
Q

What does the amygdala mediate?

A
  1. Fear
  2. Anxiety
  3. Conditioning
  4. Avoidance behavior
  5. Behavioral inhibition

Because it’s part of the threat system sillyyyyy!

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16
Q

People with anxiety disorders usually have ___- activation of amygdala in response to _____ stimuli

A

OVER-activation of amygdala in response to NEGATIVE stimuli

17
Q

Sometimes there’s overactivation of amygdala in response to POSITIVE stimuli which can trigger what kind of behavior

A

“High stakes” reward seeking behavior

18
Q

Overactivation of a brain area does not necessary mean there is a corresponding increase in behavioral activity because many neural circuits are ______?

A

Inhibitory

19
Q

The amygdala of people with anxiety disorders are ______ than people without anxiety

20
Q

If over-activation of amygdala persist over long spans of time then the amygdala size might _____ due to ______ and resulting cell death

A

SHRINK

EXCITOTOXICITY

21
Q

Cortical amygdala circuits also mediate _____________ __________

And especially what kind?

A

DECISION MAKING!

Especially about how much EFFORT to put into something and whether to DELAY GRATIFICATION

22
Q

Damage to the Amygdala can impair ___________

A

Decision making

23
Q

The hippocampus is part of the ____ system

A

Limbic! ~ also threat system ok don’t forget <3

24
Q

Dorsal (top) hippocampus what does it do?

A

It consolidates STM memories into LTM memories = mediates learning! Eg. HM case study

25
Q

Ventral (bottom) hippocampus does what?

A

Also mediates FEAR and ANXIETY and has reciprocal connections to amygdala and HPA axis

26
Q

Hippocampus also resolves ________ _______ conflicts

A

Approach-avoidance conflicts

27
Q

Approach-avoidance conflicts

A

Psychological conflicts that arise when a goal is both desirable/undesirable

28
Q

Hippocampal dysfunction in anxiety disorders usually would _____ approach-avoidance arbitration which would contribute to _______ behavior

A

IMPAIR

MALADAPTIVE

Eg. People who seek treatment but don’t do the treatment protocols/ want a relationship but don’t fully commit

29
Q

The prefrontal cortex is located in the _________ of the cortex

A

Anterior(front) most region of the cortex

30
Q

What does the prefrontal cortex use a variety of?

A

NEUROTRANSMITTERS!

31
Q

What does the prefrontal cortex mediate?

A

Executive functions!

32
Q

Examples of executive functions? List as many as you can!

A
  1. Attention
  2. Control of impulses
  3. Planning
  4. Decision making
  5. Problem solving
  6. Reasoning
  7. Cognitive flexibility
33
Q

Executive functions can be disrupted by?

A

Overactivation of the amygdala and ventral hippocampus

34
Q

People with anxiety disorders often have ____ ________ of the prefrontal correct and/or _____ ________ _________ between cortex and limbic systems

A

Under-activation of the prefrontal cortex
Less robust connections between cortex and limbic systems

35
Q

Treatment for anxiety disorders tend to tackle?

A

Cognitive interventions used to facilitate executive functioning of the person in treatment eg. Helping people pay attention, reason, be flexible!

36
Q

A common characteristic among anxiety disorders is _____ - _______ ______ _________

A

Over-active threat circuitry

37
Q

What does over-active threat circuitry contribute to?

A
  1. Avoidance behaviors
  2. Behavioral inhibition
  3. Heightened loss aversion
  4. Pessimistic judgements that affect decision making
38
Q

Proximate causes

A

A cause that is spatially and temporally close to an effect eg. Seeing snakes

39
Q

Ultimate cause

A

A cause that is spatially and temporally distant from an effect eg. Biological evolution being ultimate cause of fear/anxiety about specific animals