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  2. Stimulus (physiology) - Wikipedia

    en.wikipedia.org/wiki/Stimulus_(physiology)

    In physiology, a stimulus [1] is a change in a living thing's internal or external environment. This change can be detected by an organism or organ using sensitivity, and leads to a physiological reaction. [ 2 ]

  3. Sensitivity (control systems) - Wikipedia

    en.wikipedia.org/wiki/Sensitivity_(control_systems)

    A sensitivity guarantees that the distance from the critical point to the Nyquist curve is always greater than and the Nyquist curve of the loop transfer function is always outside a circle around the critical point + with the radius , known as the sensitivity circle.

  4. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities. In these contexts, the capital letters and the small letters represent distinct and unrelated entities.

  5. Two-alternative forced choice - Wikipedia

    en.wikipedia.org/wiki/Two-alternative_forced_choice

    Two-alternative forced choice (2AFC) is a method for measuring the sensitivity of a person or animal to some particular sensory input, stimulus, through that observer's pattern of choices and response times to two versions of the sensory input. For example, to determine a person's sensitivity to dim light, the observer would be presented with a ...

  6. Dose–response relationship - Wikipedia

    en.wikipedia.org/wiki/Dose–response_relationship

    The dose–response relationship, or exposure–response relationship, describes the magnitude of the response of an organism, as a function of exposure (or doses) to a stimulus or stressor (usually a chemical) after a certain exposure time. [1] Dose–response relationships can be described by dose–response curves. This is explained further ...

  7. Biological neuron model - Wikipedia

    en.wikipedia.org/wiki/Biological_neuron_model

    The spiking neuron model by Nossenson & Messer [72] [73] [74] produces the probability of the neuron firing a spike as a function of either an external or pharmacological stimulus. [ 72 ] [ 73 ] [ 74 ] The model consists of a cascade of a receptor layer model and a spiking neuron model, as shown in Fig 4.

  8. Spike-triggered average - Wikipedia

    en.wikipedia.org/wiki/Spike-triggered_average

    Let denote the spatio-temporal stimulus vector preceding the 'th time bin, and the spike count in that bin. The stimuli can be assumed to have zero mean (i.e., [] =). If not, it can be transformed to have zero-mean by subtracting the mean stimulus from each vector.

  9. List of letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/List_of_letters_used_in...

    Latin and Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities.