7 Flashcards
provides opportunities to rest and repair the body
becomes possible when the wakefulness circuits are inhibited and activity in the raphe nuclei and locus coeruleus drops,
NREM or nonrapid eye movement
promotes brain development.
controlled by parts of the reticular formation located in the pons.
REM sleep
According to this theory, sleep affords the body the much-needed opportunity it requires to repair and rejuvenate itself, which involves restoring and revitalizing the physiological processes which keep your body and mind healthy and functioning properly
also explains that sleep has an essential function in relation to production of adenosine
Repair and Restoration Theory of Sleep
a chemical produced by neurons in the brain as a by: product of regular cellular activity
When one is awake, ____accumulates in the brain and scientists think that this build: This may be one of the factors that contributes to our perception of feeling tired and eventually promotes the “drive to sleep. However, during sleep, the body gets a chance to clear this chemical from the system, and as a result, the feeling of tiredness goes away which in turn leaves you feeling more alert when you wake up.
adenosine;
This theory suggests that periods of inactivity at night or during the daytime is an adaptation which served a survival function by ensuring that animals remained out of danger during times of vulnerability (Predation).
According to this theory, animals that were able to stay quiet and still during those times when they were particularly vulnerable had a greater chance of survival than those species which remained active.
Evolutionary Theory of Sleep (Adaptive Theory or Inactivity Theory)
This theory suggests that sleep is correlated to changes in the organization and structure of the brain.
was coined to refer to this extraordinary ability of the brain to change throughout an individual’s lifetime
people sleep so as to process the information they have acquired during the day and consolidate new memories.
Brain Plasticity Theory
This theory proposes that the primary function of sleep is to lower one’s demand for energy as well as reducing the amount expended during part of the night or day;
sleep has something to do with saving an individual’s energy
Energy Conservation Theory
Dreams are considered meaningless
They are just synthesis of random images of memories of PAST Experiences & Expectations stored in the Temporal Lobes of our Brain
ACTIVATION-SYNTHESIS THEORY
are the natural cycle of change in our body’s chemicals or functions. It’s like an internal master “clock” that coordinates the other clocks in your body
Biological rhythms
is located in the brain, right above the nerves where the eyes cross. It’s made up of thousands of nerve cells that help sync your body’s functions and activities.
clock
WHAT FACTORS AFFECT OUR SLEEP?
It sends daily impulses to Pineal gland to produce MELATONIN
SCN (+) = Suprachiasmatic Nucleus.
WHAT FACTORS AFFECT OUR SLEEP?
Sleep regulators chemical found in our spinal fluid. It inhibits body processes (slows down) when we need to take a rest. _____ signals us that our body is already tired & we need to sleep.
ADENOSINE (+) =
WHAT FACTORS AFFECT OUR SLEEP?
like sleeping pills. It boosts our ADENOSINE LEVELS, allowing us to have quick deep sleep.
CHEMICAL RELAXANTS (+) =
WHAT FACTORS AFFECT OUR SLEEP?
This one block effects of ADENOSINE to let us stay awake & active
CAFFEINE (-) =
WHAT FACTORS AFFECT OUR SLEEP?
Serves as Time Giver (Exogenous Zeitgeber). It goes to our retina to keep us awake
LIGHT (-) =
