PYSCH 105: Week 3 Flashcards

Video 1 and 2 Flashcards for PYSCH 105

Absolute threshold

The minimum stimulation needed to register a particular stimulus 50% of the time.

Difference threshold

The point at which one can tell the difference between two stimuli.

Weber's law

The principle that states we perceive differences on a logarithmic scale rather than linear.

Transduction

The process by which sensory information is converted into neural messages.

Hue

The color or shade of light as determined by its wavelength.

Saturation

The purity of a color determined by the number of distinct wavelengths making up the light.

Brightness

The perceived intensity of a color determined by the amplitude of its wavelength.

Chromostereopsis

The effect where pure colors located at the same distance appear to be at different distances.

Rods

Photoreceptor cells in the retina that allow vision in low light conditions.

Cones

Photoreceptor cells that enable human eyes to see fine details and colors in bright light.

Feature detectors

Specialized nerve cells in the visual cortex that respond to specific features like shape and movement.

Parallel processing

The ability to process many aspects of a situation simultaneously.

Binocular cues

Depth cues that depend on the use of both eyes, allowing perception of distance.

Monocular cues

Depth cues that can be perceived with one eye, such as occlusion and relative size.

Perceptual closure

The tendency to perceive a complete image or form even when parts are missing.

Color theory

A body of practical guidance to color mixing and the visual effects of specific color combinations.

Monochromatic color scheme

A color scheme that utilizes variations in lightness and saturation of a single hue.

Complementary colors

Colors that are opposite each other on the color wheel, providing high contrast.

Triadic color scheme

A color scheme that uses three colors evenly spaced on the color wheel.

Affordances

Perceived properties of an object that suggest how it can be used.

Top-down processing

The interpretation of incoming data based on prior knowledge and expectations.

Signal Detection theory

A model for predicting how and when a person will detect a weak stimulus, partly based on context.