Class Notes (837,838)
Canada (510,504)
Psychology (1,556)
PSYC 109W (7)
Lecture 11

Lecture 11.pdf

3 Pages
66 Views
Unlock Document

Department
Psychology
Course
PSYC 109W
Professor
V.Gordon Rose
Semester
Fall

Description
PSYC 109W- Lecture 11 SENSATION, PERCEPTION & SUBLIMAL PERSUASION Sensation vs. Perception  Sensation o A process by which our sensory receptors and nervous system receive and represent stimulus energy  Perception o A process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events Bottom-Up Processing (Sensation):  Analysis beginning with the sense receptors and works up to the brain’s integration of sensory information Top-Down Processing (Perception):  Information processing guided by higher-level mental processes  As when we construct perceptions drawing on our experience and expectations Sensation: Thresholds  Absolute Threshold o Minimum stimulation needed to detect a particular stimulus 50% of the time  Difference Threshold o Minimum difference between two stimuli required for detection 50% of the time o Just Noticeable Difference (JND)  Signal Detection o Predicts how and when we detect the presence of a faint stimulus (signal) amid background stimulation (noise) o Assumes that there is no single absolute threshold o Detection depends partly on person’s  Experience  Expectations  Motivation  Level of fatigue  Subliminal o When stimuli are below one’s absolute threshold for conscious awareness Sensation: Vision 1. Light entering eye triggers photochemical reaction in rods and cones at back of retina 2. Chemical reaction in turn activates bipolar cells 3. Bipolar cells then activate the ganglion cells, the axons of which converge to form the optic nerve. This nerve transmits information to the visual cortex in t
More Less

Related notes for PSYC 109W

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