Sensation & Perception Flashcards
The passive process of bringing information from the outside world into the body and to the brain
Sensation
The active process of selecting,organizing and interpreting the information brought to the brain by the senses
Perception
Process where by sensory organs absorb energy from a physical stimulus in the environment,sensory receptors convert this energy into neural impulses and send them to the brain
Transduction
The study of how physical stimuli are translated into psychological experience
Pyschophysics
Who said pyschophysics is the stydy of physical energy stimulation of the sensory organs which resulted in meaningful psychological experience
Sternberg
The level of energy that a stimulus must-have inorder for an organism to perceive it
Threshold
The minimum amount of energy required for an organism to detect a stimulus
Absolute threshold
The law which states that noticing a change depends on the proportion by which the stimulus has changed
First law of pyschophysics
The minimum amount of stimulus intensity change needed to produce a noticeable change
Difference threshold
What is the range of wavelength that human can detect?
350 and 750 nanometers
Sternberg defined an iris as?
Circular band muscle that make the pupil bigger or smaller
The route that light travels in the eyea
Light hits the cornea of the eye
It passes through the pupil
Rods enable us to see?
Enable us to see low light as they are sensitive to picking up black and white but not colours
What are cones?
Photoreceptor cell that pick up colours and function best in bright light
The 3 factors that are involved in seeing colour
Hue-determined by wavelengths of light
Saturation-determined by how pure the colour appears or how much combined with white
Brightness - determined by the amplitude of the light wave, which is the amount of light we see coming from the wavelengths