Textbook Notes (362,796)
Canada (158,054)
Psychology (9,545)
PSYA01H3 (1,192)
Steve Joordens (1,048)
Chapter 7

Chapter 7- big notes

7 Pages
Unlock Document

University of Toronto Scarborough
Steve Joordens

PSYA01: Chapter 7 Notes from the Textbook Brain Mechanisms of Visual Perception oPerception: detection of the more complex properties of a stimulus, including its location and nature; involves learning ex. seeing the colour red is sensation, seeing a red apple is perception osensation takes place in the eye (for example) and perception takes place in the brain oneurons in the primary visual cortex send visual information to two successive levels of the visual association cortex Primary Visual Cortex o geography of the visual field is retained in the primary visual cortex the surface of the retina is mapped on the surface of the primary visual cortex however, the map on the brain is distorted, largest area is the centre of the visual field o each tile (called module) of the map consists of a block of tissue with around 150 000 neurons o all of the neurons within a module receive information from the same small region of the retina, meaning that it receives information from a small region of the visual field o neural circuits within each module analyzed various characteristics of their own particular part of the visual field o Receptive Field: that portion of the visual field in which the presentation of visual stimuli will produce an alteration in the firing rate of a particular neuron circuits detect :lines for orientation (or angle), thickness of lines, movement and direction, colours o because each module in the primary visual cortex receives information about only a restricted area of the visual field, the information must be combined somehow for perception to take place this combination takes place in the visual association cortex Visual Association Cortex (vac) o has two levels o first level: has subdivisions, each of which contain a map of the visual scene, surrounds the primary visual cortex o each subdivision receives info from different types of neural circuits within modules of the primary visual cortex (ex. one subdivision is for line orientation, another is for colour, etc.) o two regions in the second level of vac put together info gathered and processed by subdivisions of first level info about shape, colour, lines are combined o second level: parietal lobe and lower temporal lobe 1 www.notesolution.com
More Less

Related notes for PSYA01H3

Log In


Don't have an account?

Join OneClass

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

Sign up

Join to view


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.