The Occipital Lobe is the rearmost lobe in each cerebral
hemisphere of the brain. It contains the visual center of the
brain.
-
It is one of the main lobes/regions of the cerebral cortex
- Main visual processing (color and face recognition)
- Occipital Cortex-(anatomy) a somewhat rounded
subdivision of a bodily organ or part.
The occipital lobe is located at the back
of our brain. It is responsible for
receiving and processing visual
information from our eyes.
They are not particularly vulnerable to injury
because of their location at the back of the
brain, although any significant trauma to the
brain could produce subtle changes to our
visual-perceptual system, such as visual field
defects and scotomas.
The majority of epileptic seizures are controlled by medication, particularly
anticonvulsant drugs(pain killers). The type of treatment depends on the person’s
frequency of seizures, a persons age and weight, overall health, and medical history.
Drugs Used to treat EpilepsyDilantin or Phenytek
Phenobarbital
Tegretol or Carbatrol
Mysoline
Zarontin
Depakene
Depakote, Depakote ER
Valium and similar tranquilizers, such as Tranxene and Klonopin
Newer drugs to treat epilepsy include:
Felbatol
Gabitril
Keppra
Lamictal
Lyrica
Neurontin
Topamax
Trileptal
Zonegran
Does Lincoln’s face look normal?
Does Lincoln’s face look normal?
It seems normal but now, look at it upright: Lincoln’s eyes do not look quite right!
It seems normal but now, look at it
upright: Lincoln’s eyes do not look
quite right!
Some neurons in the brain seem specialized in processing faces.
Faces are usually seen upright. When presented upside down, the
brain no longer recognizes a picture of a face as a face but rather as
an object. Neurons processing objects are different from those processing faces and not as specialized. As a consequence these neurons
do not respond to face distortions as well. This explains why we miss
the weird eyes when the face is inverted.
Can you see a baby?
Another great example of an
illusory contour! The baby’s
head is on the left, the baby’s
feet are against the trunk of the
tree on the right.
Can you put the fish in the fishbowl?
Stare at the yellow stripe in the middle of the
fish in the picture below for about 10–20 sec.
Then move your gaze to the fish bowl.
Did you see a fish of a different color in
the bowl? You have just experienced an
afterimage.
In the retina of your eyes, there are three
types of color receptors (cones) that are
most sensitive to either red, blue or
green. When you stare at a particular
color for too long, these receptors get
“fatigued.” When you then look at a different background, the receptors that are
tired do not work as well. Therefore, the
information from all of the different color
receptors is not in balance. This will create
the color “afterimages.”
Quiz
1.What does the occipital lobe control
and where is it located?
2.What part of the body does it
operate?