Responding to the World Flashcards
Which part of the brain helps turn short term memories into long term memories?
Hippocampus
How is the hypothalamus involved in regulating emotions?
- When it comes to emotion, the hypothalamus regulates the ANS by controlling the endocrine system, by triggering the release of hormones into the bloodstream
- Some of these hormones that are triggered to release are things like epinephrine (adrenaline), norepinephrine
- Also involved in regulating other basic drives, such as hunger, thirst, sleep, and sex
Which hemisphere is more involved in positive emotions?
Left Hemisphere
Positive emotions evoke more electrical activity on the left than on the right
Which hemisphere is more involved in negative emotions?
Right hemisphere
Negative emotions evoke more electrical activity on the right than on the left
What are the 3 main components of emotion?
Physiological
Behavioral
Cognitive
What are the universal emotions?
Happiness
Sadness
Fear
Disgust
Anger
Surprise
James-Lange Theory of Emotion
- Hypothesizes that the experience of emotion is due to the perception of your physiologic responses
- Event → Physiological Response → Interpretation of Physiologic Response → Emotion
Cannon-Bard Theory of Emotion
- Hypothesizes that the physiological responses and the experience of emotion occur simultaneously
- Event → Physiological Response + Emotion
Schachter-Singer Theory of Emotion
- Hypothesizes that physiological and cognitive responses may simultaneously form the experience of emotion; if we become physiologically aroused, we don’t feel a specific emotion until we’re able to label or identify the reason for the situation
- Event → Physiological Response →Identify the Reason for the Physiological Response and for the Event→ Emotion
Lazarus Theory of Emotion
- Proposed that the experience of emotion depends on how the experience is cognitively appraised
- Event →Appraise (Label) of Event → Emotion + Physiological Response
Lazarus determined that stress arises less from actual events, but more from what?
Our appraisal, or assessment, of these events
What are the main stages of the cognitive appraisal of stress?
- Primary appraisal: Initial evaluation that focuses on the threat in the present situation
- Secondary appraisal: Evaluation of the individual’s ability to cope with the situation
What are the 3 categories of response to the primary appraisal? Which lead to the secondary appraisal stage?
- Perceived threat is irrelevant - you see the threat, but it doesn’t affect you, you’re not in danger, don’t find it to be particularly important
- Benign/Positive response
-
Stressful/Negative: The stressor is potentially harmful, or challenging or threatening
- If the response is stressful/negative, move on to the second appraisal
What are the 3 main categories of response to the secondary appraisal?
- Further appraisal of harm: What damage has already been caused?
- Appraisal of threat: What future damage could be caused?
- Appraisal of challenge: How can the situation be overcome or conquered?
Psychologists categorize stressors into what 4 major categories?
- Significant Life Changes: A significant personal life change, such as loss of a loved one, marriage, divorce, going to college for the first time, etc.
- Catastrophic Events: Unpredictable large-scale events that nearly everyone appraises as threatening, such as war, natural disasters (tornadoes, hurricanes), community disasters, etc.
- Daily Hassles: The seemingly minor negative events of daily life such as aggravating roommates, long store lines, forgetting your car keys, etc.
- Ambient Stressors: Global that are integrated into the background of the environment (For example: pollution where you live, noise/crowding; Physically perceivable, but not urgent; Hard to control, just things we put up with in our lives in the background; Can impact us without us being consciously aware of their existence)
Cortisol
- Glucocorticoid produced by the adrenal cortex
- Steroid hormone
- Contributes to stress response by redistributing glucose energy in the body and suppressing the immune system
General Adaptation Syndrome (GAS)
3 phases:
- Alarm Phase: The stress reaction kicks in, your heart starts racing, you’re ready to fight/flight
-
Resistance Phase: We’re actually fighting, or fleeing, or huddling together; Our temperature is elevated, our blood pressure and rate of breathing remain high; We’re bathing our body in the stress hormones, like cortisol
* Our bodies have reserves to react to those acute stressor in this resistance phase, but those reserves only go so far →
-
Resistance Phase: We’re actually fighting, or fleeing, or huddling together; Our temperature is elevated, our blood pressure and rate of breathing remain high; We’re bathing our body in the stress hormones, like cortisol
-
Exhaustion: If the resistance phase isn’t followed by recovery, the body’s stress resources get depleted and it leads to exhaustion; Our tissue/muscles become damaged; Dampened immunity can make us really susceptible to illness
* Our bodies are well-equipped to handle short-term stress, but when we apply those life-saving stress reactions to our daily commute, and our 9-5 jobs, etc., we end up spending way too much time experiencing the negative consequences of stress, this exhaustion consequence, which has some bad consequences
-
Exhaustion: If the resistance phase isn’t followed by recovery, the body’s stress resources get depleted and it leads to exhaustion; Our tissue/muscles become damaged; Dampened immunity can make us really susceptible to illness
What are some negatives effects of stress on the heart?
-
Increased blood pressure
- In response to the increased force of higher blood pressure during stress, the blood vessel distend a little big (get a bit bigger) → the blood vessels respond to this distention by building up a little more muscle and becoming a little more rigid → That increased vessel rigidity requires then more force from the heart to move blood through the vessels → leads to a vicious cycle of elevating blood pressure that gets higher and higher → can lead to hypertension
-
Hypertension can lead to vascular disease
- When blood constantly slams against our vessels at higher-than-normal pressure, our veins and arteries experience little episodes of damage, and this leads to inflammation and plaque-buildup, and that plaque is super attracted to things like fat and cholesterol, which end up sticking to these spots and narrowing our blood vessels
- One of the worst spots to experience this vascular disease is in our coronary arteries, called Coronary Artery Disease (CAD)
- When these vessels get clogged up, the very organ that pumps oxygen and nutrients to our whole body in the form of blood is unable to keep working; It dies because it’s not getting the oxygen/nutrients it needs as a tissue
- When heart tissue is unnourished and starts to die, we call that a heart attack
What are some negative effects of stress on metabolism?
- During the fight/flight response, our body secretes hormones like cortisol and glucagon, and glucagon helps convert those glucose energy stores back into usable forms of energy
- Increase blood sugar can be very damaging
- If the stress is psychosocial and we aren’t running for our lives, we don’t need all this extra energy → The extra glucose can really exacerbate metabolic conditions like diabetes, which is when we already have extra blood sugar
- Very serious as rates of lifestyle-based diabetes are skyrocketing, especially in Westernized cultures
- Extra glucose can also contribute to cardiovascular disease
- If the stress is psychosocial and we aren’t running for our lives, we don’t need all this extra energy → The extra glucose can really exacerbate metabolic conditions like diabetes, which is when we already have extra blood sugar
What are some negative effects of stress on reproductive abilities?
- In girls, reproduction is a huge energy expense, both in terms of ovulation and uterine development, but also in the prospect of pregnancy and fetal development → This exercise naturally gets shut down as a part of the stress response
- With chronic stress, the hormones involved with pregnancy, like luteinizing hormone (LH), or follicle-stimulating hormone (FSH), and subsequently estrogen and progesterone, can become chronically inhibited, making it harder to release eggs or nurture their growth → Reproductive abilities can be very dampened
- Boys experience a similar inhibition in hormones, particularly with testosterone, but testosterone levels are less finicky and don’t depend on the precisely-time cycles that girls experience, so it is difficult to reduce them to the point of infertility
- The big stress-induced problem in men is erectile dysfunction (impotency)
- When the sympathetic nervous system turns on, our peripheral blood vessels clamp down so we can keep blood in our core, so less blood is flowing to appendages, including the penis
- The majority of ED-related doctor visits aren’t related to organic impotence, but rather psychologically-induced impotence, often related to stress
- The big stress-induced problem in men is erectile dysfunction (impotency)
What are some negative effects of stress on immune function?
- Immune system can be split into two main categories: innate and adaptive; inflammation is part of the innate immune system
- In the short-term, acute stress can lead to overuse of the immune system: We turn on this inflammation too much, and when we have too much inflammation, we can start attacking good things in our body
- An example is arthritis: When our joints become overly inflamed
- If our bodies become conditioned to chronic stress, we can actually stop activating the immune system response appropriately, and our immune system can become suppressed
- Now stress isn’t necessarily making us sick, but it is making us more susceptible to illness
Literature suggests that which 2 particular brain areas are being activated in response to stress? Why?
- Hippocampus and Frontal Cortex
- The literature suggests these brain areas have the most glucocorticoid receptors
- Glucocorticoids are major stress hormones, like cortisol → These brain areas are being activated during stress
- The mechanism for stress-related damage is still unclear, but we do see atrophy of the neurons in these areas → If theses parts of the brain are damaged because of overabundance of stress, that the effects of stress can play out in our emotional and behavioral responses
What are some major behavioral responses to stress?
Depression
Anger
Anxiety
Addiction
Behavioral responses to stress: Depression
- Clinically validated by biology because parts of the brain, specifically the anterior cingulate (the inner part of the frontal cortex), stop making/responding to serotonin, making us feel gloomy
- The damage is compounded by the fact that without good serotonin response, we perceive more stressors
- “Learned Helplessness” Describes the relationship between chronic stress and major depression: You learn, from having the control ripped out of your hands, that you don’t have control, and this leads you to take less and less control over your life → You lose the ability to identify coping mechanisms to respond to stress because you’re taking less control over your life/outcomes of your life and the cycle just continues downwards into major depression