Psychology Week of Feb 10th Chapter 4 part 1 Consciousness Awareness of external events and internal sensations while under conditions of arousal Awareness The subjective state of reflecting about yourself your thoughts and your experiences Also a form of metacognition Metacognition Thinking about thinking Arousal Psychological state of being in engaged with the environment Higher level consciousness Controlled processing in which individuals are actively thinking and alert focused on their task and goals Example Learning a new skill or an activity Lower level Consciousness Automatic processing and daydreaming which requires little attention and focus Example Doing something so many times it becomes easy daydreaming Altered States of Consciousness Produced by drugs trauma or fatigue Subconscious Awareness Usually occurs when people are aslpee and dreaming but also occurs when we are awake Example Sleep dreaming blind sight and split brain patients No Awareness Usually occurs when we are knocked out or anesthetized but may also occur while awake rare Circadian Rhythms Behaviors that synchronize with the 24 hour cycle of the day Example Sleep wake cycle body temperature blood pressure blood sugar levels Biological Clock Brian system that detects the passage of time using internal and external cues and regulates body stems accordingly This is how your body knows what time it is Suprachiasmatic Nucleus from the eyes to synchronize its rhythms with the daily cycle of light and dark Biological clock uses this within the hypothalamus Part of the hypothalamus that uses input Sleep The average adult person sleeps eight hours a night The average young adult sleeps nine to ten hours a night We are also not sure why we sleep Effects of Sleep Deprivation Crankiness irritability sleepiness Poor memory Poor performances Poor moral judgments Health costs How to Disrupt Your Sleep Cycle Travel jetlag Night shift work Pulling an all nighter Insomnia How to Reset Your Clock 1 Sleep and wake up at appropriate times 2 Exposure to appropriate light dark cues 3 Melatonin REM Sleep Rapid eye movement sleep dream sleep helps with our memory Desynchronized alpha and theta waves Characteristics Rapid eye movement EOG skeletal muscle paralysis EMG dreaming Studying Sleep EEG EOG EMG Stages of Wakefulness Sensors in a headband brain neurons electron patterns Sensors on eye measures REM Sensors on arms measures muscle movement Higher level consciousness waves high frequency Lower level consciousness waves slower and bigger Stages of Sleep Alert attentive actively thinking Beta Relaxed awake daydreaming Alpha Stage 1 Drowsy sleep can easily be woken up head nod myoclonic jerk We begin to see Theta waves mostly Theta waves making you feel well rested Stage 2 Lower muscle activity low sensitivity irregular EEG patterns Stage 3 and 4 Deep sleep difficult to wake restorative important for Sleep Spindles Sudden high frequency burst of activity K Complexes Out of no where there is a tall spike of brain activity Slow Waves Sleep Delta waves sleepwalking Sleep and Disorders Insomnia Inability to fall asleep waking in the night waking up too early most common due to stress anxiety Sleep Apnea Stop breathing while asleep when soft pallet closes you stop breathing Somnambulism Sleep walk talk occurs in slow wave sleep 02 13 2014 02 13 2014
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