sleep rem :: essays research papers

States of Consciousness Consciousness   Ã‚  Ã‚  Ã‚  Ã‚     Ã‚  Ã‚  Ã‚  Ã‚  In 1960 a man named W. Dement conducted a series of studies relating to sleep. His main goal was to understand and learn about the effects of dream deprivation. His tactics would soon be very useful in the quest of answering some very complex questions.   Ã‚  Ã‚  Ã‚  Ã‚  He started out with the idea of observing infants while they were asleep, without realizing that he couldn’t get no verbal feed back from a new born. He then decided to choose 20 random adults to be his ginnea pigs. He would then end up putting these 20 individuals through a series of test and trials. Dement did this by a series of awakenings through the course of sleep. He would monitor his subjects in another room by hooking up electronic devices to the patients muscles located around their eyes. The purpose of the electronic devices was to be able to wake up the subjects in two different periods. One being eye movement and the other no eye movement. He would then wake them up and ask if they could remember their dream.   Ã‚  Ã‚  Ã‚  Ã‚  According to Dement 74% of the 27 awakenings during the periods of sleep accompanied by eye movement, could remember detailed visual dreams. The other 26% reported â€Å"the feeling of having dreamed,† but they could no recall the content in detail. During periods of no eye movement, there were 23 awakenings of which 82% did not remember dreaming and 4 of them said that they might have been dreaming but were not for sure. While his study progressed each subject would have to be awakened more frequently because of the bodies way of REM-rebound. Your body needs sleep and when it is denied sleep it tries to make up for lost sleep.   Ã‚  Ã‚  Ã‚  Ã‚  Today we know that there are four different stages of sleep. One being the lightest and four being the deepest. At the time, Dement had no idea that he was messing with one’s circadian rhythm. The circadian rhythm is like the body’s clock in which it sends messages to your brain to let you know what your body needs. For instance if your body needs sleep you will then start to feel tired.   Ã‚  Ã‚  Ã‚  Ã‚  The results could be used to improve interrogation tactics by utilizing dream, or sleep, deprivation. Dement did this by depriving his subjects of sleep. The body’s continued effort to make of for lost REM sleep, can force someone to say, or do, something that they normally would not have done.

Force Practice Questions

A hockey stick exerts an average force of 39N on a 0. 2kg hockey puck over a displacement of 0. 22m. if the hockey puck started from rest, what is the final velocity of the puck? Assume no friction. Your physics teacher walking with the aid of a cane approaches a skateboard of 3. 5 kg lying on the side walk. Pushing with an angle of 60 degree down from the horizontal with his cane, he applies a force of 115N, which is enough to toll the skateboard out of his way. Calculate the initial accelerationA solo arctic adventurer pulls a string of two toboggans of supplies across level, snowy ground. The toboggans have masses of 95kg and 55kg. Appling a force of 165N causes the toboggans to accelerate at 0. 61m/s2. Find the tension in the rope attached to the second toboggan. A 75kg man is standing on a scale in an elevator when the elevator begins to descend with an acceleration of0. 66 m/s2. What is the reading on the scale while elevator is accelerating? A 32 kg baby is practising climbing skills on a climbing wall, while being belayed by her parent.The child loses her grip and dangles from the rope. When the parent starts lowing the child, the tension in the rope is 253N. Find the acceleration of the child when she is first being lowered. The lighter person on an Atwood machine is 45kg. If the tension in the rope is 512N, what is the mass of the second person? What is the acceleration of the two people? A 40g glider on an air track is connected to a suspended 25g mass by a string passing over a frictionless pulley. When the mass is released, how long will it take the glider to travel the 0. 5 m to the other end of the track. Starting from rest, Grace bikes down the starting ramp at a professional biking track. If the ramp has the minimum legal dimensions (1. 5m high and 12m long), find the acceleration when coefficient of friction is 0. 11 Lyn flick a 5. 5g coin up a smooth board propped at an angle of 25 degree to the floor. If the initial velocity of the coin is 2 . 3m/s up the board and the coefficient of kinetic friction between the coin and the board is 0. 4, how far does the coin travel before stopping?

How to Pass a College Class

Whether youre about to start college, about to restart college, or just want to up your game a bit, its important to get back to the basics: doing well in your classes is critical for your success. And while knowing how to pass a college class seems so simple at first, being able to follow through over the course of a semester can often become challenging. How to Pass a College Course In essence, there are several key things all college students need to know  Ã¢â‚¬â€Ã‚  and do  Ã¢â‚¬â€Ã‚  if they want to pass their classes. Attend Class Go to class! It can be all too easy to not go to class regularly, especially if your professor doesnt take attendance. And it can be all too easy to sleep in or attend other events instead. Over time, however, low attendance can turn into a major problem. Youll miss discussing and learning about important material, of course, but youll also miss other key elements. These elements include the moment your professor mentions that something is going to be on an upcoming exam, the moment the light bulb finally goes off in your own brain because of something another student said, the moment you got the idea for your final paper. Engage With the Material Theres more to a class than just the few hours it meets each week. Do the assigned reading. Watch the assigned films. Think about what youre learning and how it can apply to all kinds of things outside of the classroom. How is what youre learning important in the bigger picture of your life? Of the universe? Talk to Your Peers Engage with the students. Your classmates can be one of the best resources for your learning experience. Whether youre in a study group or just connect with one student in particular, engaging with your fellow students can deepen your understanding of the course material and help shift your perspective. Talk to Your Professor Engage with the professor. Office hours are like a gift your professor gives you each semester. Use them! Whether you have a question about what was covered in class, want feedback on a paper or project youre working on, or just want to talk to your professor about something kinda-sorta-maybe related to the class, office hours are the place to do it. Additionally, if your professor sees youve been giving it your all at the end of the semester, he or she might be more inclined to give you the benefit of the doubt if youre grade is on the border. Manage Your Time Plan in advance for papers and tests. Time management in college is not easy  Ã¢â‚¬â€Ã‚  at all. And managing multiple projects, assignments, and deadlines can be one of the biggest challenges you face. Can you pull an all-nighter? Probably. But you might get sick, your computer might crash, you might not finish in time, and you definitely wont turn in your best work. Plan in advance for papers and exams so that you can work on them slowly, deliberately, and well. Keep up With Your Work Stay on top of your assignments as often as possible. Staying on top of your reading and other assignments  Ã¢â‚¬â€Ã‚  like language lab hours  Ã¢â‚¬â€Ã‚  is important, too. Will it always be possible? Probably not. But staying on top of your academic to-do list is a major factor in making sure that youre understanding the material and, consequently, that youll likely pass the class. Remember to Relax Relax from time to time. Even though your brain is technically an organ, it does operate like a muscle in many ways. If you keep doing the same motions over and over, youre likely to sabotage your own chances for success. You cant study all the time, and even if you could, your efforts would quickly become ineffective. Take a break. Go for a walk. Relax for a few minutes. Take an afternoon or even an entire day off. Let yourself relax and enjoy your college life so that you have the mental energy you need for your academic obligations  Ã¢â‚¬â€Ã‚  and so that you can have some fun along the way, too. Set Goals Set goals about what you want to learn and experience. Passing a class is more than just getting a certain grade. What do you want to learn? What do you want to experience? What skills do you want to gain? Getting a C in your everyone-else-failed, nearly-impossible-to-pass statistics class, for example, might feel like more of a victory than the A you earned with barely any effort in your creative writing course. While grades are important, they arent the be-all, end-all of your college experience. You need to pass your classes, of course, but you also need to be mindful of what you want to learn and experience along the way.