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Related Concept Videos

Optimal Arousal Theory01:23

Optimal Arousal Theory

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The optimal arousal theory suggests that performance is maximized when an individual experiences a moderate level of arousal. This theory is closely tied to the Yerkes-Dodson law, which illustrates an inverted U-shaped relationship between arousal and performance. The law, formulated by psychologists Robert Yerkes and John Dodson, implies an ideal arousal level for optimal performance, and deviations from this level can lead to declines in effectiveness.
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Stress Response System01:21

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The stress response system, also known as the fight-or-flight response, is the body's automatic physiological reaction to perceived threats. Hans Selye introduced the concept of General Adaptation Syndrome (GAS) to describe the predictable pattern of changes that occur in response to stress. GAS consists of three sequential stages: alarm, resistance, and exhaustion. This model helps explain how chronic stress can contribute to health problems.
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Design Example01:23

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The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
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Schemas01:42

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A schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing information that allows the brain to work more efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed.
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Related Experiment Video

Updated: May 1, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
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Alarm fatigue: the human-system interface

Lilly M Guardia-Labar1, Elizabeth Ann Scruth, Judy Edworthy

  • 1Author Affiliations: Regional Clinical Practice Consultant (Ms Guardia-LaBar), Kaiser Permanente Northern California Patient Safety, Oakland; Clinical Practice Consultant (Dr Scruth), Critical Care/Sepsis, Clinical Effectiveness Team, Regional Quality and Regulatory Services, Oakland, California; Professor of Applied Psychology (Dr Edworthy), Cognition Institute, Plymouth University, Devon, England; Director of Adult Services and Caring Science Integration (Ms Foss-Durant), Kaiser Permanente Northern California, Patient Care Services, Oakland; and Director of Biomedical Technology Integration (Mr Burgoon), Kaiser Permanente, Enterprise Application Services and Emerging Technologies, Oakland, California.

Clinical Nurse Specialist CNS
|April 10, 2014
PubMed
Summary

No abstract available in PubMed .

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