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Transcript of Dreams
-There are 5 stages of sleep MRI (Magnetic Resonance Imaging) - The MRI was invented by Raymond Vahan Damadian in 1978 while he worked for the FONAR corporation
-MRI's are cylindrical shaped and work by sliding the patient in on a platform. This fully surrounds them by the rest of the machine, allowing for scanning and evaluation
-The machine uses magnetic fields and radio waves to produce a image of the patient's internal organs and tissues
-They are used to find diseases and abnormalities such as tumors, cancers etc... Stage 1 During Stage 1 of sleep the body is
slowly relaxing and if awakened the person
may not have been aware that they had slept.
There is some eye movement during this stage. Stage 2 During stage 2 of sleep the person is in a light
doze. The body temperature lowers and the
heart rate slows down. Stage 3 During Stage 3, the person is slowly going
into a deep sleep Stage 4 During the 4th stage of sleep
the person is finally in deep
sleep. Stage 5 The last and 5th stage of sleep is the
REM (Rapid Eye Movement sleep). During REM
sleep is when the person dreams. The body is fully paralyzed and the brain is in high activity.
The heart rate and breathing of the person
is faster than regular. Usually people dream up
to 5 times at night but may not be aware of it
upon awakening. MRI machines create images of brain activity based on changes in blood flow to different areas of the brain Software decoders scan a subject's visual cortex while they view thousands of images over 5 hours, adapting the decoder to the person's particular brain. Decoders then predict what the person's brain activity would be like if they viewed a second set of different images The subject then looks at the second set. By using the information collected, and by looking at MRI scans, it's possible to tell what the subject was looking at only by looking at scanned images of that persons brain. This has an accuracy rate of being correct 80% to 90% of the time http://www.telegraph.co.uk/science/science-news/8781503/Mind-reading-device-recreates-what-we-see-in-our-heads.html The Pros of MRI Technology
MRI scans are 100% radiation free and painless, the magnetic field used have been proven to be harmless to humans
MRI scans are incredibly precise and lessens the time for a person to check his/her body with other tests
Unlike x-rays which only show bone, MRI's are able to show tissue structures like ligaments and cartilage
MRI also show organs such as the brain, heart, eyes, lungs etc...
MRI machines have aided immensely in the understanding of activities that occur in the brain such as dreams
Is effective in identifying many diseases including infections,cancers, injuries and more
Can be used to communicate with people who are unable to speak (due to illness or defect) by reading their minds Cons of MRI Technology
MRI machines are very high in cost, a MRI machine is priced from 1-3 million dollars
There is a limited number of MRI machines which make the wait for a MRI scan to be very long
MRI's need for the patient to be motionless which make some involuntary movements in the body affect the final image
Images can be distorted because of the strength of the magnetic field
MRI's are incredibly large and cumbersome, if the need to transport one arrives it will raise many difficulties to do so Future Possibilities of MRI Being able to fully read the minds of others from images that are made in the brain from thoughts
Having the ability to record dreams and to be able to re-watch what you dream
Being able to profit from your dreams by making them into movies, videos, images, etc.
Could be the gateway to using brain activity to control everything, erasing need for buttons and such Currently it would be impossible to create a movie/video
of our thoughts and dreams. This is because MRI's are only
able to make a scan every 3-4 seconds. This is why current
researches are starting with still images and videos that are
inconsistent with their flow. The images of MRI scans are currently rather low in quality.
As the tech for MRI's, software decoders, computers, memory storage and other technologies important to recording dreams improve, so will the quality of the images and videos created by them. This will eventually lead to being able to record high quality thoughts and dreams. Ethical Concerns In the future, people believe that this dream recording technology will someday allow you to read other people's minds, with certain techniques. Though this type of technology would be revolutionary
there are many people who criticize the risk that this technology may give. One of the larger issues of this technology would be the issue of
privacy. No one wants their deepest secrets to be exposed or their mind being read. If this technology were to be developed it would need to be regulated to prevent others from stealing your thoughts and dreams and making them public. Big and.... ... small Conclusion MRI technology has been made very important contributions to the biotechnology field
This technology has helped find/indicate diseases and has saved many lives over its 30 year span
Without the use of this technology we would not understand nearly as much of the activity that happens in our brains
This technology shows an abundance of potential and will eventually lead to mind-reading and dream recording The End Presented By
Tiam, Sabrina,Carson and
"Scary or sensational? A machine that can look into the mind | Science | The Guardian ."
Latest US news, world news, sport and comment from the Guardian | guardiannews.com |
The Guardian . N.p., n.d. Web. 28 Sept. 2012. <http://www.guardian.co.uk/science/2008/may/30/mindread>.
"'Mind-reading device' recreates what we see in our heads - Telegraph." Telegraph.co.uk
- Telegraph online, Daily Telegraph, Sunday Telegraph - Telegraph. N.p., n.d. Web. 2 Oct. 2012.
"Mind-reading research: the major breakthroughs - Telegraph." Telegraph.co.uk
- Telegraph online, Daily Telegraph, Sunday Telegraph
- Telegraph. N.p., n.d. Web. 2 Oct. 2012.
"Does your brain sleep when you do?." Your Amazing Brain. N.p., n.d. Web. 2 Oct. 2012.
"What is Your Brain Doing While You Are Sleeping?." Advanced Life Skills — Strategies for Positive Change.
N.p., n.d. Web. 2 Oct. 2012. <http://advancedlifeskills.com/blog/what-is-your-brain-doing-while-you-are-sleeping/>.
"While You Sleep, Your Brain Keeps Working | World of Psychology." Psych Central - Trusted mental health, depression,
bipolar, ADHD and psychology information .. N.p., n.d. Web. 2 Oct. 2012.
<http://psychcentral.com/blog/archives/2008/08/03/while-you-sleep-your-brain-keeps-working/>. Bibliography Other controversies surrounding this are the ideas that this technology could be used for criminal activities and it could lead to "thought crimes", meaning you could be incriminated simply by thinking the wrong things. MR MRI scans use the fact that the human body is made of mostly
water. This water contains hydrogen and oxygen atoms. Since
hydrogen atoms naturally have their own magnetic spin the MRI
takes advantage of this. MRI's align the nuclei of the atom using
the magnetic field and radio waves. After the nuclei of the atoms
align, another pulse of radio waves is used to return into the position
they were before. This movement causes the atoms to send radio
waves of their own. These radio waves are then recorded and turn
the waves into the images that we see.