6. Vision pathway - Retinal Ganglion Cells Opponent-process...

Info icon This preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Retinal Ganglion Cells: Opponent-process Coding The lack of color opponency in M cells because both the center and surround of the receptive field receive input from more than one type of cone. color-opponent P-ganglion cells response to one wavelength in the receptive field center is canceled by showing another wavelength in the receptive field surround. Two types of opponency: Red vs. Green and Blue vs. Yellow explanation of our perception of different hues
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The Retinofugal Projection Optic Nerve Optic Chiasm Optic Tract
Image of page 2
The Retinotopic Representation of the Visual Field The two retinal foveas are normally aligned on a single target in visual space, causing the visual fields of both eyes to overlap extensively. This binocular field of view consists of two symmetrical visual hemifields (left and right).
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Projection of the binocular field of view onto the two retinas and its relation to the crossing of fibers in the optic chiasm Left visual hemifield à nasal retina left eye and temporal retina right eye à right optic tract. Right visual hemifield à nasal retina right eye and temporal retina left eye à left optic tract .
Image of page 4
Retinal Ganglion Cell Targets
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The Pupillary Light Reflex Pathway The pupils of both eyes respond identically normally, regardless of which eye is stimulated ( the direct response ) and the unstimulated eye ( the consensual response ). Failure to elicit a response (either direct or indirect) to stimulation of the left eye if both eyes respond normally to stimulation of the right eye suggests damage to the sensory input from the left eye, possibly to the left retina or optic nerve.
Image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern