Textbook Notes (381,163)
CA (168,383)
UTSC (19,323)
Psychology (10,052)
PSYA01H3 (1,329)
Steve Joordens (1,150)
Chapter 6

Chapter 6 - Perception

4 Pages
117 Views

Department
Psychology
Course Code
PSYA01H3
Professor
Steve Joordens

This preview shows page 1. Sign up to view the full 4 pages of the document.
Chapter 6 Perception
Brain Mechanisms of Visual Perception
- Perception: Rapid, unconscious process where we recognize what is represented by the
information provided by sense organs, provides coherence and unity (AFTER SENSATION),
not deliberate or effortful to figure out what the meaning something is
-Visual perception by brain is a hierarchy/system of information processing
1) Primary Visual Cortex: Earliest stage of visual analysis was in thalamus and primary
visual cortex David Hubel and Torsten Wisel inserted microelectrodes into cats and
monkey to detect action potentials by neurons, they were electronically amplified and
recorded, they concluded that the geography of the visual field is in the PRIMARY VISUAL
CORTEX
- The map is like a mosaic (picture of individual tiles, module/"tile" = block or cortical
tissue that receives information from the same group of receptor cells)
Receptive Field: Part of visual field where presenting visual stimuli will produce
alternation in firing rate of particular neuron
2) Visual Association Cortex: Place where the perception of objects and the visual scene
place in combination with P.V.C
- Information is further analyzed by V.A.C, as stated by Grill-Spector and Malach), more
complex features are analyzed within a bit of milliseconds
- Neurons in P.V.C send axons to V.A.C which divides to
A) Ventral Stream: Continues to inferior temporal cortex, SERVES TO RECOGNIZE
WHAT OBJECT IT IS (FORM AND COLOUR)
- Studies with lab animals state that patterns and 3-D perception takes place here
- Visual Agnosia ("Visual Fail to Know"): Inability for person who is not blind to recognize
the identity of object visuality, common symptom is Progagnosia ("Face"): Form of visual
agnosia characterized by difficulty in the recognition of people's faces
- Studies show that face-recognizing circuits in fusiform face area (FFA): Region of
ventral stream)
- Suggests that these circuits develop due to experience seeing people's faces
- Functional Imaging Studies show that different regions in the ventral system respond
differently to particular categories of visual stimuli (i.e. extrastriate body area (BBA) is
www.notesolution.com

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
Chapter 6 Perception Brain Mechanisms of Visual Perception - Perception: Rapid, unconscious process where we recognize what is represented by the information provided by sense organs, provides coherence and unity (AFTER SENSATION), not deliberate or effortful to figure out what the meaning something is -Visual perception by brain is a hierarchysystem of information processing 1) Primary Visual Cortex: Earliest stage of visual analysis was in thalamus and primary visual cortex David Hubel and Torsten Wisel inserted microelectrodes into cats and monkey to detect action potentials by neurons, they were electronically amplified and recorded, they concluded that the geography of the visual field is in the PRIMARY VISUAL CORTEX - The map is like a mosaic (picture of individual tiles, moduletile = block or cortical tissue that receives information from the same group of receptor cells) Receptive Field: Part of visual field where presenting visual stimuli will produce alternation in firing rate of particular neuron 2) Visual Association Cortex: Place where the perception of objects and the visual scene place in combination with P.V.C - Information is further analyzed by V.A.C, as stated by Grill-Spector and Malach), more complex features are analyzed within a bit of milliseconds - Neurons in P.V.C send axons to V.A.C which divides to A) Ventral Stream: Continues to inferior temporal cortex, SERVES TO RECOGNIZE WHAT OBJECT IT IS (FORM AND COLOUR) - Studies with lab animals state that patterns and 3-D perception takes place here - Visual Agnosia (Visual Fail to Know): Inability for person who is not blind to recognize the identity of object visuality, common symptom is Progagnosia (Face): Form of visual agnosia characterized by difficulty in the recognition of peoples faces - Studies show that face-recognizing circuits in fusiform face area (FFA): Region of ventral stream) - Suggests that these circuits develop due to experience seeing peoples faces - Functional Imaging Studies show that different regions in the ventral system respond differently to particular categories of visual stimuli (i.e. extrastriate body area (BBA) is www.notesolution.com
More Less
Unlock Document


Only page 1 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

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


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