Sensation and perception Flashcards
What are our senses
vision hearing, touch, smell, taste, temperature, pain, acceleration & body composition
what is the function of the vision perceptual system
Object identification/recognition & navigation & motion perception
what is the function of the visual perceptual system
Object identification/ recognition & object localisation
what is the function of the touch perceptual system
Object identification/ recognition & pain (detection of tissue damage)
what is the function of the touch perceptual system
Object identification/ recognition & pain (detection of tissue damage)
what is the function of the smell & taste perceptual system
chemical detection/ identification & nutrition & poison avoidance
what is a distal stimulus
physical object in environment
what is a proximal stimulus
a representation of the distal stimulus
what is a receptor process
the transformation of environmental physical energy into electrical energy (aka transduction)
what cells are responsible for carrying out transduction
receptor cells
how does transduction occur in vision
receptors in the retina transform light into electrical impulses
how does transduction occur in audition
receptors in the inner ear transform sound into electrical impulses
what is neural processing
the transmission of electrical signals from one neuron to another
what is perception
conscious sensory experience
what is recognition
placing an object in a category
what is action
movement of the eyes, head and body
what is top down processing
processing based on prior knowledge/experience
what is processing based on incoming sensory information known as
bottom-up processing
does perception require top down processing, bottom-up processing, both or neither
it requires both top down and bottom up processing
what is top down processing important for (in general)
helping simplify complex perceptual processes
imaging is a physiological way of recording brain activity
Name 3 types of imaging
- fMRI
- MEG
- EEG
- PET
name 3 phsyiological ways of studying whats going on in the brain during perception
- studying anatomy
- recording brain activity
- micro stimulation
- lesioning & TMS
What are psychological approaches to studying perception useful for
measures the relationship between stimulus & perception
what is an absolute threshold
the smallest magnitude we can perceive