Class Notes (839,189)
Canada (511,223)
Psychology (7,818)
PSYB65H3 (519)
Ted Petit (310)
Lecture 5

neuropsychologylec5.doc

3 Pages
108 Views

Department
Psychology
Course Code
PSYB65H3
Professor
Ted Petit

This preview shows page 1. Sign up to view the full 3 pages of the document.
Description
Human Brain and Behaviour Lecture 5 petitmal epilepsy - minor type of epilepsy - no true behavioral convulsions - characterized by rolling up of eyes (most common), twitch - loss of awareness - only last 5-20 seconds - 50-75% of the time, occurs by itself - can occur in grandmal - EEG 3 cycle per second activity sensory motor functions and dysfunctions visual system - anatomy of the retina is split down the middle - temporal portion of your retina near the outside of the head, nasal portion near the nose - retina is really part of your central nervous system - optic nerve - nerve that leaves the retina - the temporal nerves come together, cross then part - where the nerves touch - optic chiasm - the part of your retina from the temporal portion as it continues back, comes to the op- tic chiasm and does not cross - nasal portion of each retina, when they go toward the optic chiasm, cross and continue over to the opposite side of the brain - everything on the right visual field, will hit the nasal portion of the right eye and the temporal portion of the left eye (draw the diagram from 18:00 in lecture) - everything you see in your right visual field goes to your left cortex What happens when severing optic nerve 1. Normal - full visual field 2. Monocular blindness - severing of one optic nerve closest to eye 3. Bitemporal hemianopsia - severing the nerves that cross (optic chiasm) (nasal por- tion) - blindness outer half of visual field in each eye 4. Right nasal hemianopsia - tumor on temporal part of the right eye - blindness in vi- sion in the nasal portion of the right eye Human Brain and Behaviour Lecture 5 5. homonymous hemianopsia - severing of the right optic tract - blindness in the left of the eye (nasal portion of the right eye, temporal portion of the left eye) 6. Quadrantanopsia - severing the temporal nerves on the right eye - blindness in top left quadrant of the visual field 7. Macular sparing - all the way to the cortex and there is damage (right side) - blind- ness in left half of vision except for the center (sparing) - at the peripheral portion (retina) capable of detecting a spot of light falling on a single receptive field - area 17 of cortex (primary receptive area for vision) able to detect bars of light oriented in a particular orientation
More Less
Unlock Document

Only page 1 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

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.


Submit