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Neuroscience - Vision, Lecture notes of Neuroscience

The eye - introduction to vision

Typology: Lecture notes

2019/2020

Uploaded on 08/19/2023

nicolo-paganini
nicolo-paganini 🇺🇸

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The optic nerve carries the
output of the eye
Figure by MIT OpenCourseWare. After figure 10.2 in: Bear, Mark F., Barry W. Connors, and
Michael A. Paradiso. Neuroscience: Exploring the Brain. 2nd ed. Baltimore,
MD: Lippincott Williams & Wilkins, 2001. ISBN: 9780683305968.
E ye
Optic Nerve
Optic Chiasm
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The optic nerve carries the

output of the eye

Figure by MIT OpenCourseWare. After figure 10.2 in: Bear, Mark F., Barry W. Connors, and Michael A. Paradiso. Neuroscience: Exploring the Brain. 2nd ed. Baltimore, MD: Lippincott Williams & Wilkins, 2001. ISBN: 9780683305968.

E ye

Optic Nerve

Optic Chiasm

Finding the “receptive field”

• Record the action potentials of an axon in

the optic nerve

• Present visual stimuli at various locations

• Find the location at which a stimulus can

cause changes in the firing rate.

The cornea is more refractive

than the lens of the eye

Figure by MIT OpenCourseWare. After figure 9.7 in Bear, Mark F., Barry W. Connors, and Michael A. Paradiso. Neuroscience: Exploring the Brain. 2nd ed. Baltimore, MD: Lippincott Williams & Wilkins, 2001. ISBN: 9780683305968.

Focal Dal Dal Dal Distancistancistancistancistancistance

Refrefrefracactivtivtive Pe Pe Power (Der (Der (Der (Der (Dioptioptioptiopters) =ers) =ers) =ers) =ers) =ers) =ers) =

Focal Dal Dal Dal Distancistancistancistancistancistance (m)e (m)e (m)e (m)

e (m)

Variation in acuity with retinal

Anstis, 1974

position

Transient vs. sustained

responses

• Stimulus

• Response

time

Resistive network model

Figure 3 in Carver A. Mead and Misha Mahowald. "A Silicon Model of Early Visual Processing." In Computational Neuroscience. Cambridge, MA: MIT Press, 1993. Courtesy of Carver A. Mead and Misha Mahowald, authors, and Eric L. Schwartz, editor. Used with permission.

Chevreul’s illusion

Light: reality vs. perception