Textbook Notes (369,072)
Canada (162,366)
Psychology (2,981)
PSY100H1 (1,831)
Chapter

Ch5 - Sensation and Perception

9 Pages
107 Views

Department
Psychology
Course Code
PSY100H1
Professor
Ashley Waggoner Denton

This preview shows pages 1,2 and half of page 3. Sign up to view the full 9 pages of the document.
Description
5 Sensation and PerceptionFebruary 3 2014137 AM How Do We Sense Our WorldsSensationThe sense organs response to external stimuli and the transmission of these responses to the brainInvolves the detection of external stimuli eg light pressure odours etc responses to those stimuli and the transmission of these responses to the brainIt is an elementary experience such as colour or motion without the more complex perceptual experience of what is being seen or what is movingInitial gathering of information from the external world responding and transmitting that information to the brainPerceptionThe processing organization and interpretation of sensory signalsIt results in an internal representation of the stimulus and a conscious experience of itThe essence of perception is construction of useful and meaningful information about a particular environmentOften based on prior experiences which shape expectations about new sensory experiencesWhat we sense is the result of brain processes that actively construct perceptual experiences and as a result allow us to adapt to our environments detailsEverything is experienced in the brain the world we live in is a mental constructContext and change are importanteveryones experiences are completely subjectiveSensory codingour sensory organs translations of stimulis physical properties into neural impulsesDifferent features of the physical environment are coded by different neural impulse patternsTransductionprocess by which sensory receptors pass impulses to connecting neurons when they receive stimulation eg from pressure on the skin in the case of touchIts the first step in sensory codingTranslates properties eg light waves into neural codinga language that the brain is able to understandMost of this information except for smell goes first to the thalamus before being directed to a particular part of the cortex where the information is then interpreted as sight smell taste etcTo function effectively our brains need qualitative and quantitative information about a stimulusWe can identify qualitative differences because different sensory receptors respond to qualitatively different stimuliQuantitative differences in stimuli are coded by the speed of a particular neurons firinga more rapidly firing neuron is responding at a higher frequencyIn most sensory systems receptors provide coarse coding in which sensory qualities are coded by only a few different types of receptors each of which responds to a broad range of stimuli
More Less
Unlock Document

Only pages 1,2 and half of page 3 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit