Class Notes (809,199)
Canada (493,574)
Psychology (3,816)
PSYC 2390 (188)
Lana Trick (145)

Feb 9, 2012 Lecture Notes

3 Pages
Unlock Document

University of Guelph
PSYC 2390
Lana Trick

Feb 9 2012 Spatial Frequency in the Striate Cortex REVIEW Background conceptsA Contrast and how measuredB Gratings C Spatial Frequency and how measuredIII Spatial frequency perception to spatial frequency Measuring quantifying sensitivity toHow do you measure sensitivity spatial frequency using contrast humans operate in a range of spatial frequency and we are not equally sensitive to all spatial frequenciesA The Contrast sensitivity function CSF In adults 1 Measure contrast thresholdonce youve established the threshold for one spatial frequency you do this over and over agin start at a very low spatial frequency adjust contrast find threshold contrast try this for all possible spatial frequencies 2 Convert to contrast sensitivitywe are not equally sensitive to all spatial frequencies this contrast sensitivity function is a good representation of thatthere is a peak in the centre which mean we are highly sensitive we need a low contrast levelWe are not equally sensitive to all spatial frequencies B Factors that affect sensitivity to spatial frequency 1 Species how measured start with one spatial frequency at a very low level then bring it to a level where the cat can perceive ittrain to push a lever when they can see the grading on the screen do it for ever spatial frequencytake the threshold and convert it the CSF for a cat is lower than it is for us this means that they can see spatial frequencies that are lower than the ones we can perceive cats can see things
More Less

Related notes for PSYC 2390

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.