Mapping the brain

californiamandrillSoftware and s/w Development

Dec 13, 2013 (3 years and 5 days ago)

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Mapping the brain

Use the following link to find and
describe the functions of the brain

http://www.pbs.org/wgbh/nova/body/mapping
-
the
-
brain.html




Assignment

1.
Launch the interactive link.

2.
Using
each

perspective (coronal, sagittal, axial)

A. Name the part of the brain



B. Draw in a
bright color
the section of the


brain in the proper anatomical location.



C. Describe how it appears on the scan.

3.
Using the information icon, record the main
functions and any other factual observations.

Acronyms

fmri



Functional magnetic resonance imaging:
a form of magnetic resonance imaging of the brain that



registers blood flow to functioning areas...
wordnetweb.princeton.edu/perl/webwn


pet scan



Positron emission tomography
(PET) is a nuclear medicine imaging technique which produces a three
-


dimensional image or picture. For more information click the link





http://www.pbs.org/wnet/brain/scanning/pet.html



MEG


Magnetoencephalography

MEG scan
, is an imaging technique that identifies brain activity and measures


small magnetic fields produced in the brain. Of all the brain scanning methods, MEG provides



the most accurate resolution of the timing of nerve cell activity
--

down to the millisecond. Hopefully, as the


technology improves, MEG devices will become cheaper, more portable, and more prevalent.

For more click on


the link.
http://www.pbs.org/wnet/brain/scanning/meg.html



DTI


Diffusion tensor imaging
creates 3D images of your nerves. Click the link and scroll down to see more.


http
://neurosurgery.ucla.edu/body.cfm?id=409



Probabilistic

Probabilistic atlas of the human brain, which retains information on how brain structure and function vary


in

large populations.
http://www.loni.ucla.edu/~thompson/prob_atlas.html




Use the worksheets with these images
to complete your assignment.


Name of brain structure________________________

Coronal


Sagittal


Axial






Description of function _________________________________







Amygdala


The amygdala is a tiny almond
-
shaped mass
located deep inside the temporal lobe.



A study in
Nature

in 2011 showed that the bigger
your amygdala, the more friends you have.

Brain Stem


The brainstem is the vertical structure
connecting the spinal cord to the brain.



All motor and sensory communication between
the brain and the body is funneled through the
brain stem.

Broca’s Area


Broca's area refers to a section of cerebral cortex
in the lower portion of the frontal lobe near the
temporal lobe.



It is linked to speech and lies in the dominant
hemisphere, which is on the left
-
hand side in
most people.

Cerebellum


The cerebellum sits just beneath the cerebrum.



Unlike the undulating and variable ridges and
folds of the cerebrum, the folds in the
cerebellum are much tighter and more regular,
like an accordion.

Frontal Lobe


The frontal lobe is both the largest and forward
-
most lobe of the brain.



It is separated from the
parietal

lobe by the
central sulcus

a vertical groove in the cortex

and from the
temporal

lobe by another groove
called the
Sylvian Fissure
.

Hippocampus


The hippocampus lies beneath the
cortex

of the
temporal lobes.



Its name is Latin for seahorse, which its shape
resembles.



One study showed that the area of the
hippocampus that stores navigational memory
was larger in taxi drivers.

Hypothalamus


About the size of a pearl, the hypothalamus is
located below the thalamus.



It's primarily responsible for controlling body
temperature, hunger, thirst, fatigue, sleep, and
circadian cycles.

Motor Strip


The motor strip, also known as the
primary
motor cortex
, is a thin strip of cortex toward the
back of the frontal lobe that spans both
hemispheres of the brain.



Many musicians have an abnormally large area
of motor cortex dedicated to controlling finger
movements.

Occipital Lobe


The occipital lobe, the smallest of the four lobes,
is responsible for vision.



It is less vulnerable to injury than other lobes
thanks to its location at the back of the head.

Parietal Lobe


The parietal lobe lies at the top of the brain,
between the frontal and occipital lobes, and is
primarily responsible for spatial and visual
perception as well as for interpreting

be it
language, vision, hearing, pain, movement, or
memory

Prefrontal Cortex


The prefrontal cortex is the forward
-
most region
of the frontal cortex.



Compared to most mammals, humans have an
abnormally large and convoluted prefrontal
cortex.

Primary Auditory Cortex


The primary auditory cortex is located in the
uppermost part of the temporal lobe.



After adjusting for brain size, women on average
tend to have significantly thicker primary
auditory cortices than men.

Primary Visual Cortex


The primary visual cortex lies in the middle of
both occipital lobes.



It receives information directly from the eyes
and passes it on to other areas of the occipital
lobe for further processing. This is also known as
Brodmann area 17
.

Sensory Strip


The sensory strip, located in the parietal lobe,
receives feedback from joints and tendons in the
body and is organized in the same way as the
motor strip.

Temporal Lobe


The left and right temporal lobes sit on the sides
of the brain, in front of the occipital lobe.



They contain most of the limbic system,
including the amygdala and the hippocampus.




The limbic system contains the brain's "pleasure
center" and regulates emotion and motivation. It
also plays a key role in long
-
term memory.

Thalmus


The thalamus is a paired, egg
-
shaped structure
that sits atop the brainstem in the center of the
brain. It plays a role in attention, memory, and
alertness, serving as a major pre
-
processing
relay station for information going to the cortex
from all the senses except smell.

Wernicke’s Area


Wernicke's area consists of a section of cortex in
the temporal lobe.



In 97% of people it is found in the left
hemisphere.



In 2012, researchers at Georgetown University
discovered that the area was several centimeters
closer to the front of the brain than previously
thought.