Week 6 - Sensation & Perception Flashcards
Basic principles of sensation and perception. Core processes of sensation and the major human senses. Basic understanding of how perception helps us to organise and interpret our sensory experiences.
The ability to recognise objects in spite of different visual stimulation
Perceptual constancy
Perception isn’t determined by the actual stimulus, but by our____
Prediction and interpretation of the stimulus
Little activation occurs in the brain when___
We can predict a stimulus accurately
A stimulus detection process where our sense organs respond to and translate environment stimuli is a ____
Sensation
Nerve pulses that are sent to the brain is a____
Sensation
The process by which our sensory systems detect information from the outside world is a sensation. True or False
True
An active process of organising and giving meaning to stimuli’s is ____
Perception
Perception makes sense of what our senses tell us. TRUE or FALSE
True
______studies relationship between the physical characteristics of stimuli and sensory capabilities
Psychophysics
Minimum amount of physical energy needed to notice a stimulus
e.g. 50% hit rate in experimental conditions
is the _____
Absolute threshold
Smallest difference between two stimuli that ppl can perceive 50% of the time is the _____
Difference threshold
The notable difference proportional to the magnitude of the stimulus is known as ____ or ______as the shortest
Webers Law / Weber Fraction
Alertness, expectation, rewards and significance of the stimuli are all factors that influence _____
Sensory Judgement
Below our absolute threshold
Subliminal stimulation
Stimulus is so weak or brief that although its received by senses it cannot be perceived consciously is_____
Subliminal stimulation
Sensory input is tied to a single interpretation. TRUE or FALSE
False - sensory input is ambiguous
The process of integrating, organizing and interpreting sensations
Perception
The process by which a form of physical energy is converted into a coded neural signal that the nervous system can process
Transduction
Gestalt perceptual laws/ principles
Similarity
Proximity
Closure
Continuity
Connectedness
The way in which the human eye perceives visual elements
The process of detecting a physical stimulus such as light, sound, heat, pressure
Sensation
Principle that the just noticeable difference of a stimulus is a constant proportion despite variations.
Webers Law
Specialized cells unique to each sense organ that responds to a particular form of sensory stimulation
Sensory receptors
The theory of color vision that holds that all color perception derives from three different color receptors in the retina red, green, and blue receptors
trichromatic theory
colors seems to cross each other out. after imaging
opponent process theory
Has the longest wavelength
Red
Hue is
quality of the color
3 primary receptors
rod
cone
pigment ehpithelium
has the shortest wavelength
Violet
nanometer
Used to specify the wavelength of transmitted light.
intensity of light
brightness
purity or richness in which we receive color
saturation
the mean in which we organize our sensations into coherent perceptions.
Gestalt Perception Laws
