UB PSY 341 - Psy341 lecture 3 (5 pages)

Previewing pages 1, 2 of 5 page document View the full content.
View Full Document

Psy341 lecture 3



Previewing pages 1, 2 of actual document.

View the full content.
View Full Document
View Full Document

Psy341 lecture 3

8 views


Pages:
5
School:
University at Buffalo-SUNY
Course:
Psy 341 - Cognitive Psychology

Unformatted text preview:

PSY341 Chapter 3 Perception Sensation o Absorbing raw energy ex light waves sound waves through our sensory organs Transduction o Conversion of this energy to neural signals Attention o Concentration of mental energy to process incoming information Perception o Recognizing selecting organizing and interpreting these signals Not an exact copy of the world Partially based on our past experience and expectations From Sensation to Representation Energy contains information about the world usually incomplete full of noise and distorted Sensory receptor transduces energy into a neural response o Equal playing field what matters is which nerves are excited o Stimulation of a specific nerve provides codes for that one sense Sensory nerve transmits the coded activity to the central nervous system Thalamus processes and relays the neural response o For all senses but olfaction which projects to the olfactory bulb Relayed to specialized areas of the cortex Bottom Up Processing Feature Matching Theories Recognize objects on the basis of a small number of characteristics features o Detect specific elements and assemble them into more complex forms o Brain cells that respond to specific features such as lines and angles are referred to as feature detectors Physiological Evidence For Features Hubel Wiesel 1979 Simple cells detect bars or edges of particular orientation in particular location Complex cells detect bars or edges of particular orientation motion direction Feature Searches Simple features seem to pop out o Fast processing o But sometimes need to engage in serial search for simple features o Occurs when distractors share simple feature as target Serial search o If feature doesn t pop out must rely on serial search Combined features don t pop out o Don t have conjoined feature detectors o Requires serial search Processing speed depends on number of distractors More distractors longer processing o Hierarchical processing Feature Analysis Bottom up processing Perception



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Psy341 lecture 3 and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Psy341 lecture 3 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?