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Human Performance > Human Overload And Stress > Flashcards

Human Overload And Stress Flashcards

1
Q

Arousal

A

State of physiological or psychological excitement.

Higher Heart rate/higher blood pressure/increased physical response capability

Increased sensitivity to stimuli/increase wakefulness and alertness

Autonomic Nervous System

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2
Q

Stress

A

Heightened state of arousal caused by external and internal events called stressors

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3
Q

Stress increases

A

Arousal which increase vigilance

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4
Q

Stress key points

A

Cumulative
Subjective
Natural

Experience helps ward of stress
Too much stress degrades performance

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5
Q

Optimum performance is achieved at what level of stress

A

Acute stress increases alertness, vigilance and arousal and prepares body for action

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6
Q

Domestic Stressors NO1

A

Death of a relative

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7
Q

Physiological Stressors

A

Anything that impacts senses or physiological balance

Heat/noise/vibration/humidity/hunger/circadian rhythm

More stressful stressor when its perception of control is low

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8
Q

Psychological Stressors

A

Within the mind
Rational or irrational fear or anxiety and phobias

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9
Q

Causes of stress

A

Occupational - shift work/job security
Psychological - Fears/Anxiety/Job security
Physiological - vibration/heat/humidity
Domestic - death/divorce/social

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10
Q

Stress/Arousal levels past the break point

A

Stress will increase
Arousal will increase

All negative

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11
Q

Overload - cause and physiological effects

A

Is due to stress

Increase in blood pressure/low mood/decreased cognitive performance/unable to concentrate/insomnia/tunnelling/incapacitation

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12
Q

Underload - causes/consequences

A

Routine/repetitive/long periods of inactivity/high automation

Underperformance/reduce communication/reduced flying skills

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13
Q

Stress is subjective of what two things

A

Actual demands of the stress
Perceived demands to cope with the stress

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14
Q

General Adaptation Syndrome Stages

A

Alarm Stage - Adrenaline (initial shock/heart rate up/breathing up)

Resistance - cortisone (sustained physiological changes - mobilisation of blood sugars)

Exhaustion - accumulation of stressors/heart rate comes down return to homeostasis but can lead to illness

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15
Q

GAS Syndrome is triggered by the

A

Autonomic Nervous System

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16
Q

Chronic Stress is

A

Repeated episodes of increased heart rate leading to hardening of arteries can cause physiological illness (heart attack)

17
Q

Acute Stress

A

Mobilisation of resources to cope with situation
Can be a good thing for performance
Can lead to chronic stress though

18
Q

Break Point

A

Unable to cope with physiological and psychological response from cumulative stress

Performance from this point onwards is degraded

19
Q

Three reactions to stress

A

Psychological - restlessness/nervousness/behaviour changes
Psychomatic - spots/ulcers/cold sores/hear issues
Somatic - Autonomic response fails to react as quickly

20
Q

Regression

A

Reverting old solutions to a new problem
Correct actions forgotten

21
Q

Fatigue causes x4

A

Inadequate rest
Disruption to circadian rhythm
Excessive physical
Excessive cognitive stress

22
Q

Fatigue is

A

Non pathological state resulting in a decreased ability to maintain function or workload due to mental/physical stress

23
Q

Chronic Fatigue

A

Cumulative and caused by external period of excessive workload

24
Q

Acute Fatigue

A

Everyday lift
Lack of sleep/going out to work 9-5
Relaxing/sleep will resolve

25
Q

Fatigue Risk Management System

A

Balance costs/productivity and safety in aviation
Data/risk assessment process
Applies to all aviation staff involved in operations

26
Q

Coping with stress

A

Direct action - remove stressor
Information seeking - cognitive coping to understand stress
Inhibition - do nothing (only effective short term)
Palative coping - treating symptoms (drugs)
Support - turning to other for emotional support

27
Q

Anxiety

A

Imaginary stress worries that do not go away when stressor is removed

28
Q

Stress exposure training

A

Seen as a long term problem focused coping method.

29
Q

Distress

A

Positive Stress increase vigilance and performance

Human Performance (18 decks)

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