ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Psychology => Topic started by: sisqo1111 on June 11, 2008, 05:46:43 pm

Title: please help with convergence and retinal disarity!
Post by: sisqo1111 on June 11, 2008, 05:46:43 pm

hi
im stressing out about these two. would someone be able to provide a clear explanation of both plus an example. these are what alway stuff me up on my practice exams.
thankyou!

Title: Re: please help with convergence and retinal disarity!
Post by: moshi on June 11, 2008, 05:52:08 pm

these are both binocular depth cues
retinal disparity - due to the 6-7cm difference between the eyes, each retinal image received by the eye is slightly different. the greater the disparity, the closer the object is, vice versa
convergence - the inward turning of the eyes to focus upon a nearby object. the brain judges that the greater the tension in the eye, the closer the object
hope that helps!

Title: Re: please help with convergence and retinal disarity!
Post by: Nick on June 11, 2008, 05:55:10 pm

You also need to remember that convergence has limited application- it can only be used for objects within seven metres.

Title: Re: please help with convergence and retinal disarity!
Post by: moshi on June 11, 2008, 05:58:06 pm

and retinal disparity within 10m

Title: Re: please help with convergence and retinal disarity!
Post by: daniel99 on June 11, 2008, 07:09:01 pm

Thats what i was stuck with aswell :( thanks for clarifying it...