3] Perception Flashcards
What is sensation
Sensory organs absorb energy from physical stimuli, the receptors detect stimuli energies and convert them into neural impulses
What is perception
sensory information is organised and interpreted into something meaningful, depending on the persons knowledge and experiences
What is sensory adaptation
Ceasing to perceive constantly reoccurring stimuli
What are the concepts of perception
1] Distal object- stimuli in environment
2] Informational Medium- sound, light
3] Proximal stimulation- sound waves in contact with sensory receptors
4] Perceptual Object- thing is perceived
What is mental percept
Internal representation of the stimulus by avalible sesnory infomation being manipulated
Visual system: What is the Iris
It controls light entering the eye
Visual System: What is accommodation
Images brought into focus on the retina by changing shape of lens
Visual System: What is transduction
Radiant enegry transmitted to a nural form
What are photoreceptors
Specialized light-detecting cells on the retinas at the back of your eyes.
Visual System: What is cones
Sensitive to colour and located in the fovea.
Colour and sharpness visions, dominated in well lit environments
Visual System: What is rods
Sensitive to light and dark, located in periphery.
Specialised for vision in dim lighting
What are visual pathways
When information travels from the eye to the back of the brain via pathways
What is the ventral stream
It is the what pathway
What is the dorsal stream
It is the where pathway
Lesions in the temproal lobe know what?
Where something is but not what it is
Lesions in the parietal lobe know what?
What something is but not where it is
What is the Gestalt approach
When the whole is greater than the sum of its individual parts
Gestalt principles: Law of pragnanz
Simplest organisation of a visual array in stable and coherent forms
Gestalt principles: Law of proxmity
Object near are percieved as a unit
Gestalt principles: Law of similairty
Similar objects are percieved as a unit
Gestalt principles: Law of continuity
Percieveing smoot flowing forms
Gestalt principles: Law of closure
Close/completing objects that arnt
Gestalt principles: Figure ground
Some figures seem prominet where others recede
Gestalt principles: Symmetry
Symmetrical areas seen as figures against asymmertical background
