Biological Effect Mechanisms of Damage Injury to living tissue results from the transfer of energy to atoms and molecules in the cellular structure. Ionizing radiation causes atoms and molecules to become ionized or excited. These excitations and ionizations can: * Produce free radicals. * Break chemical bonds. * Produce new chemical bonds and cross-linkage between macromolecules. * Damage molecules that regulate vital cell processes (e.g. DNA‚ RNA‚ proteins). The cell can repair
Premium Cancer Ionizing radiation Radiation poisoning
as a means of restoring the biological system to a better working order this is the basis of the restoration theory‚ Sleep is divided into several different stages such as SWS‚ and REM sleep‚ Oswald proposed that each of these sleep stages has a different restorative function. SWS enables the body to repair itself and REM enables brain recovery and memory consolidation. During slow wave sleep growth hormones are secreted‚ this stimulates growth and is therefore important during childhood. It is also
Premium Sleep Memory Hippocampus
mainly occur in the rapid-eye movement (REM) stage of sleep‚ when brain activity is high and resembles that of being awake. REM sleep is revealed by continuous movements of the eyes during sleep. At times‚ dreams may occur during other stages of sleep. However‚ these dreams tend to be much less vivid or memorable. Dreams can last for a few seconds‚ or as long as 20 minutes. People are more likely to remember the dream if they are awakened during the REM phase. The average person has three to
Free Dream Dreaming Sleep
02 D-DBIRTH PIC X(10). 02 D-UNAME PIC X(5). 02 D-CNAME PIC X(4). 02 D-SCORE PIC 9(3). 02 D-REM PIC X(6). FD OUTFILE LABEL RECORD IS OMITTED DATA RECORD IS OUTREC. 01 OUTREC. 02 FILLER PIC X(80). WORKING-STORAGE SECTION. 01 ENUM PIC 9(10). 01 ENAME PIC X(25). 01 DBIRTH PIC X(10). 01 UNAME PIC X(5). 01 CNAME PIC X(4). 01 REM PIC X(6). 01 UCODE PIC 9. 01 CCODE PIC 9. 01 ITEMS PIC 9(3). 01 SCORE PIC 99. 01 VALID-REC PIC
Premium 1920 1916
fourth sleep stage‚ we begin REM sleep. Rapid eye movement known as (REM) was discovered in 1953 by University of Chicago researchers Eugene Aserinsky‚ and Nathaniel Kleitman. REM sleep is
Premium Dream Dreaming Sleep
two types of sleep- Slow-wave sleep and Rapid Eye Movement (REM) sleep. Slow Wave Sleep:- This sleep is exceedingly restful and is associated with decreases in both peripheral vascular tone and many other vegetative functions of the body. For instance there are 10-30 percent decreases in blood pressure‚ respiratory rate‚ and basal metabolic rate. REM Sleep (Paradoxical sleep‚ Desynchronized sleep) In a normal night of sleep‚ bouts of REM sleep lasting 5 to 30 minutes usually appear on the average
Premium Sleep Sleep deprivation Sleep disorder
THE PROJECT ON CONVERSION OF NUMBER SYSTEMS INDEX Sr no. | TOPIC | Pg No | 1. | Title | 1 | 2. | Subtitle | 1 | 3. | Abstract | 2 | 4. | Introduction | 3 | | 4.1 | Decimal System | 5 | | 4.2 | Binary System | 6 | | 4.3 | Hexadecimal System | 7 | | 4.4 | Octal system | 8 | 5. | Algorithms | 9 | 6. | Solved Examples | 14 | 7. | Programs
Premium Binary numeral system Hexadecimal Decimal
there are two main stages of sleep that alternate at about 90-minute intervals. Those stages are the REM and nonREM sleep. Rapid eye movement or (REM) sleep can be roughly described as a period when the brain is active but the body is paralyzed. Note that you can only dream during a REM cycle of sleep. In non-rapid eye movement or (nonREM) sleep‚ the brain is less active but the body can move. Non-REM sleep is composed of four stages. Your brain goes through each stage of sleep in a continuous cycle
Free Sleep Dream Dreaming
home at various hours of the night‚ my sleep is disrupted impacting my health and daily functioning. In a typical night’s sleep a person passes through five stages. These stages progress in a cycle from stage 1 to rapid eye movement‚ also known as REM. I will describe each of the five cycles and how they are critical to health and daily functioning. The first stage of sleep is a very light sleep and only lasts between 5 and 10 minutes. In this stage‚ our brain activity powers down by about 50 percent
Premium Sleep Sleep disorder Sleep deprivation
gov/health/prof/sleep/res_plan/section5/section5a.html Sleepwalking Bassetti et al.‚ L. (2000). Blackman‚ M. R. (2000). Related Alterations in Sleep Quality and neuroendocrine Funtion: Interrelationships and Implications. JAMA‚ 887-881. Chang‚ L. (2010). Stages of Sleep: REM and Non-REM. National Sleep Foundation . Culebras‚ A. (1996). "Somnambulism" Clinical Handbook of Sleep disorders . Massachusetts: Butterworth-Heinemann. Gale Power Search. (2005). Somnambulism. Miyatake‚ A.‚ Morimoto‚ Y.‚ Oish‚ T.‚ Hanasaki ‚ N.‚ Sugita
Premium Sleep