Comprehensive Notes on Stress, GAS, Allostatic Load, Multitasking, Biofeedback, and NSDR (Video Transcript)

Saber-toothed tiger as a stress analogy

• Smilodon (official name) named for its seven inch saber-like teeth; weight over $600 ext{ pounds}$; teeth length $7 ext{ inches}$.
• Behavior: hid in grass, pounced on prey, delivered a fatal bite.
• Timeframe: saber-toothed tigers roamed The Americas from about $2.5 imes 10^{6} ext{ years ago}$ to about $11{,}700 ext{ years ago}$; lived alongside humans; apex predators; possible interactions with humans evidenced by bones found with spears.
• Relationship to humans: complex; while not a biology class, the example is used to illustrate the human stress response system.
• Core lesson: our body stress response evolved to help us escape dangerous threats like saber-toothed tigers; the downside is that frequent, unrelenting activation (stress) can impair health.

What is stress? official definition and dimensions

• Definition (official from the textbook): stress is a nonspecific response of the body to demands that we or others make on it.
• Stress manifests across multiple wellness dimensions: physical, cognitive, social, etc.
• Not all stress is negative; there are three types of stress:
  • Eustress: positive stressors (e.g., moving to a desired place, starting a new job, getting married).
  • Distress: negative stressors (trauma, loss, serious illness).
  • New stress: neutral or relatively minor stressors that are temporary.
• The stress response is designed to help us cope with threats, but chronic activation can be harmful.

Five categories of stressors (with examples)

• Acute time-limited stress: stress events that come on quickly, are routine, and resolve quickly.
  • Examples: giving a presentation; misplacing car keys for more than a few minutes.
• Brief stressors: more serious than acute; there is an endpoint, but stakes are higher.
  • Examples: SAT/ACT deadlines; important project deadlines.
• Chronic stressors: ongoing demands with no clear end in sight.
  • Examples: permanent disability after an accident; caring for a parent or grandparent with dementia.
• Distant stressors (distal): past events continued to impact present emotional health.
  • Examples: childhood abuse; combat exposure.
• Life change events: planned/predictable or unexpected experiences; can be positive or negative.
  • Examples: getting married (positive); losing a home in a fire (negative); moving; getting a new job or losing a job.
• Life events are often scored on a scale; accumulating enough events can raise illness/injury risk (a threshold at which illness/injury likelihood doubles is noted in the literature).
  • ext{Risk increase factor}
    ightarrow ext{about } 2 ext{ (i.e., } 2 imes ext{ baseline likelihood)}.

Dimensions of health affected by stress (and examples)

• Physical: stress can trigger broad bodily changes; example given: a menstruating person misses a period due to finals stress.
• Psychological: affects thoughts and feelings; can hamper learning/recall; linked to anxiety and depression.
  • Example: a student juggling two part-time jobs and 15 credit hours may have impaired information retention.
• Social: alters relationships with friends, coworkers, loved ones; example of “not feeling like socializing” due to cumulative stress.
• The textbook (and slides) cover other dimensions as well; college is framed as a notably stressful environment for many students.

Minoritized populations and stress (definition and sources)

• Minoritized populations: groups in society that face discrimination or systemic barriers that disadvantage them (e.g., gender, ethnicity, race).
• Consequences include limited access to resources and poorer health outcomes.
• Stressors specific to minoritized groups mentioned in lectures/slides:
  • Social climate stress: campus environment perceived as unwelcoming.
  • Intergroup stress: perceived negative relations among students from different ethnic groups.
  • Discrimination stress: direct experiences of prejudice and discrimination.
  • Racial stress: linked to anxiety, depression, and other psychiatric symptoms.
  • Achievement stress: concerns about academic preparation and impostor syndrome.
  • In-group stress: pressure to conform to group norms.
  • Cultural distress: adapting to the dominant culture’s values.
• Additional stressors for many people include money, job pressures, burnout, illness, and disability.

The stress response in the body (systems perspective)

• Stress affects the whole body across systems and dimensions.
• Common physical signs: dry mouth, heart racing, headaches, fatigue.
• Psychological signs: anxiety, depression, hypervigilance; cognitive effects include trouble learning/remembering; feeling that one’s brain is “full.”
• Social effects: impact on relationships and social behavior (e.g., skipping events, “not wanting to be around people”).
• The infographic in the slides highlights immediate vs. chronic effects; stress is not just mental but literally “in the body.”

Hans Selye and the General Adaptation Syndrome (GAS)

• Pioneering work on stress by Hans Selye (1930s–1940s) leading to the concept of GAS.
• GAS stages:
  • Alarm phase: initial shock; immediate physiological responses (e.g., increased heart rate, faster breathing, sweating); may include headaches, indigestion, anxiety, sleep disturbance.
  • Resistance phase: body fights back to restore a new state of homeostasis; elevated defenses persist as the body attempts to cope.
  • Exhaustion phase: prolonged activation leads to depleted resources; vulnerability to illness/injury increases.
• Analogy: engine vs. car—repeated activation without reset wears the system down (continuous acceleration without braking leads to breakdown).
• Graphical representations show a curve: homeostasis baseline → drop with stress → partial recovery → possible return to homeostasis or progression to illness with prolonged stress (especially with repeated exposure).
• Related term: allostatic load — wear and tear on the body from long-term exposure to stress; helps explain why stress can cause illness.
• Stress can be positive in moderation: low to moderate stress can promote preparedness and performance (e.g., “optimal stress”).
• Stress overload leads to exhaustion, psychological consequences, and illness.

Allostatic load and the stress curve

• Allostatic load: the cumulative burden of chronic stress and life events on the body's regulatory systems.
• The stress curve conceptually shows different zones:
  • Underload: insufficient arousal for peak performance.
  • Optimal stress: supports performance and learning.
  • Overload: performance declines; risk of burnout, illness, and mental health issues.
• The balance between stress and recovery is key; frequent, repeated stress delays recovery and worsens outcomes.

Multitasking and cognitive load (practice and reflection)

• Terms:
  • Multitasking: trying to do more than one attention-demanding task at once.
  • Backtasking: allowing a non-attentional task to run in the background while focusing on something demanding.
  • Switchtasking: switching attention between two demanding tasks, causing performance costs.
• Common claim vs. reality: multitasking is often misnamed; most people are actually switchtasking, which increases time, reduces quality, and raises stress.
• Demonstrated exercise (brief in-class activity): recopying phrases and digits under two conditions:
  • Part 1: switch to one task (a single attention task) – time, accuracy, and stress felt.
  • Part 2: perform two tasks in sequence (letter-to-number mapping) – observe increased time, decreased quality, and heightened stress.
• Takeaways:
  • Reducing task switches can save time, improve accuracy, and lower stress.
  • Strategy: identify one single task to devote full attention to at a time.
• Homework/in-class prompts (week two, ICAP in-class activity): short reflective responses (4 prompts, 1–2 sentences each), focusing on stress during one-task vs. switching, personal multitasking tendencies, and how the exercise affects beliefs about multitasking.
• Reference to the author’s book: The Myth of Multitasking.

Biofeedback and relaxation techniques (practical tools)

• Biofeedback concept: real-time information about physiological processes to learn to control them.
• In this session, heart rate was used as a proxy for stress, with the goal of returning to baseline and achieving homeostasis.
• Pulse check exercise: count heartbeats for one minute to establish baseline.
• Quick relaxation protocol: Non-Sleep Deep Rest (NSDR), also called Vulvanegria (a simplified, down-to-earth version of NSDR).
• NSDR/session structure (about 10 minutes):
  • Prepare: seated or lying down; dim lights, close eyes.
  • Breathing: inhale deeply (nose or mouth), exhale fully through pursed lips; repeat several cycles to slow heart rate.
  • Body spotlight visualization: mentally illuminate and observe different body parts from feet upward, noting contact with surfaces and sensations, while maintaining slow breathing.
  • Dim the spotlight: gradually reduce intensity, maintain relaxed breathing, and notice the body sinking into the surface with each exhale.
  • Gentle physical checks: small movements of toes, ankles, knees, head, arms to demonstrate nervous system control.
  • Open eyes and reflect on the ability to modulate perception and nervous system states via attention and breath.
• Post-NSDR: a second pulse check to assess any heart-rate changes after relaxation.
• Practical note: NSDR is presented as one effective, accessible relaxation technique; other relaxation strategies exist and may be explored in future sessions.

Practical implications, reflection, and takeaways

• Stress is a common, multi-dimensional phenomenon affecting physical, cognitive, and social wellness.
• Understanding stress types and stressors helps in recognizing personal triggers and planning coping strategies.
• In college and work settings, recognizing vulnerability in minoritized groups and first-year students can guide supportive approaches and resources.
• The GAS model provides a framework to understand how short-term coping can become a problem if recovery is insufficient.
• Allostatic load explains how chronic stress contributes to illness over time, underscoring the importance of recovery and stress management.
• Mindfulness of task engagement (reducing switchtasking) and employing structured relaxation techniques (like NSDR) can improve performance and well-being.
• The lecture integrates science with practical activities (interactive exercises, biofeedback, and reflection) to cultivate healthier stress management habits.

Quick reference terms and formulas (LaTeX-friendly)

• Weight of saber-toothed tiger: $600 ext{ pounds}$
• Teeth length: $7 ext{ inches}$
• Timeframe: $2.5 imes 10^{6} ext{ years ago}$ to $11{,}700 ext{ years ago}$
• Stress response factors:
  • Stress can be intensified by chronic exposure, increasing illness risk by a factor of $2$ relative to baseline once a life-change threshold is exceeded: $ext{Risk} = 2 imes ext{Baseline risk}$
• NSDR duration: $10 ext{ minutes}$ (approximately)
• Pulse check duration: $1 ext{ minute}$
• In class activity duration: approximately $5 ext{ minutes}$ for video; plus $15{-}20 ext{ minutes}$ for reflection and prompts
• Time categories can be expressed conceptually, e.g.,
  • Underload, Optimal stress, Overload (endpoints not given as numbers but represented on a curved performance/stress graph)

References to next steps (if you want to dive deeper)

• Read about the General Adaptation Syndrome (GAS) and allostatic load in health psychology texts.
• Explore the Myth of Multitasking by Chris Bailey for a deeper understanding of switchtasking and backtasking.
• Practice NSDR or other relaxation techniques regularly to strengthen your body’s ability to move toward homeostasis after stress.
• Consider campus resources for minoritized populations and stress management, including counseling, peer support, and academic accommodations as needed.