Sensory science

What term describes increased sensitivity following stimulus removal?

Sensory rebound.

The viscosity of egg white decreases with shearing force. What rheology term describes this?

Shear thinning/ pseudoplastic

How does toothpaste affect the taste of orange juice?

Sodium lauryl sulfate, blocks sweet receptors in mouth and makes juice taste bitter.

What is the difference between somesthesis and kinesthesis?

Somesthesis = tactile sense, skin feel; Kinesthesis = deep pressure sense of proprioception

Which taste qualities are NOT mediated by G-protein coupled receptors?

Sour, salty

What is the psychophysical law that relates stimulus intensity to perceived intensity?

Stevens’ Power Law.

Describe expectation error.

Subjects anticipate the sensation and report their response before it is applicable.

What is used to compare the relative sweetness of all sweeteners?

Sucrose (table sugar in white packet)

What is the standard against which all sweetners are measured in terms of quality of taste and taste profile?

Sucrose (table sugar)

Individuals who are extremely sensitive to the compound PROP are called what?

Super-tasters

Which sense detects sweetness, sourness, bitterness, saltiness, and umami?

Taste.

What is the relationship between temperature and sweetness?

Temperature increases, sweetness increases

Describe error of habituation.

Tendency to continue to give the same response when a series of slowly increasing or decreasing stimuli are presented

What is the sensory effect that results from the interaction of calcium and pectin

Texture (firming)

What is deglutition?

The act or process of swallowing food

What is 'psychophysics'?

The discipline within psychology that investigates the relationship between physical stimuli and their subjective correlates, or percepts.

Define suppression in the context of the interaction of stimuli presented simultaneously as mixtures.

The effect created when one substance decrease the perceived intensity of a mixture of two or more substances

Define enhancement in the context of the interaction of stimuli presented simultaneously as mixtures.

The effect created when one substance increasing the perceived intensity of a second substance.

Enhancement or suppression involves the interaction of stimuli presented simultaneously as mixtures. Define Synergy in this context.

The effect of the presence of one substance increasing the perceived combined intensity of two substances, such that the perceived intensity of the mixture is greater than the sum of the intensities of the components

The R-Index is a sensory difference test which is based upon what theory?

The Signal Detection Theory, which addresses the signal-to-noise ratio present in all human sensory systems