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74 Cards in this Set
- Front
- Back
Lark |
A person who is active and alert in the morning and becomes drowsy and innattentive in the eveneing. |
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Circadian Cycle |
A change in biological and behavioral functioning over a 24 hour period. |
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Circadian Rhythm |
An endogynous cycle that controls the circadian cycle, including sleep. |
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SCN |
Suprachiasmatic Nucleus |
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Owl |
Reverse of a Lark |
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Epinephrine plays a role in.... |
Alertness. Larks have their peak in the morning and owls have their peaks at night. Others have it somewhere in the middle. |
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Can this affect the sleep cycle? Body temperature |
Yes. |
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What changes throughout the day? List three. |
Body temperature, hormone levels, adenosine levels. |
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Free-running Rhythm |
25 or more hour cycle that develops in the absence of natural light-dark cycles. |
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This receptor in the eye detects the dawn-dusk cycle. |
Nonvisual photoreceptor. |
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Information travels from the nonvisual photoreceptors travels to the SCN via what? |
Retinohypothalamic tract. This resets the SCN. |
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Damage to the connections between the retina and SCN produce what? |
25 hour biological cycles. |
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People with seasonal affective disorder have altered ____ levels. |
Melatonin |
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Exposure to bright light has what two effects? |
Resets biological clock by resetting SCN. Influences secretion of melatonin. |
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How does SCN activity affect melatonin? |
SCN activity inhibits the release of melatonin. |
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Zeitgebers |
Conditions in nature, running on a 24 hour cycle, that have the ability to reset the body's biological clock; An external time cue that resets an animal's biological clock every 24 hours |
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High-____ foods help people stay awake, but high-_____ hasten sleep. |
Protein, carbohydrate |
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What patterns are used to determine altertness and wakefulness? |
Cortical EEG patterns |
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Cerveau isole preparation(Isolated forebrain preparation) is a cut between the inferior collicule and cuperior colliculi deprived the higher brain areas of sensory information from the Spinal Cord and Brain Stem. What effect did this have short term and long term? |
Short term: Cats slept continously. Long term: Cats had a desynchronized EEG pattern. |
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Reticular Formation/Reticular Activation System |
Plays a role in arousal. The midbrain RF receives nonspecific sensory information from all sensory systems and arouses the cerebral cortex. |
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Midbrain Reticular Formation |
The midbrain RF receives nonspecific sensory information from all sensory systems and arouses the cerebral cortex via projections through thalamic nuclei.
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Locus Coeruleus |
Plays a role in arousal/wakefulness; Determines cortical activity levels and behavioral alertness. |
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What is the neurotransmitter in the locus coeruleus? |
Norepenephrine |
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Slow wave sleep consists of what stages of sleep? |
3 and 4 |
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Which stage of sleep is the hardest to arouse someone from? |
REM |
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Which stage of sleep would be harder to wake someone from? 2 or 4? |
4 |
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Which stage of sleep would be harder to wake someone from? 1 or 3? |
3 |
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Which stage of sleep would harder to wake someone from? 2 or 3? |
3 |
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Secretions of what substances peak at night? |
Growth Hormone(During NREM sleep), Cortisol, and Melatonin |
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PGO Waves: |
Pons --> Geniculate Nucleus --> Occipital Lobe |
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Effects of sleep deprivation include... |
Irritability, higher levels of depression, difficulty concentrating, reduced productivity, slowed thinking, more mistakes made, memory impairment, weight gain, increased appetite, anxiety, slowed reaction times, and decreases in vigilance. |
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Microsleep |
When one appears to be awake but their EEG waves resemble stage one sleep. |
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What are the three possible functions of sleep? |
Restorative(Helps replenish neurotransmitters, helps body recover, etc.), Cognitive(Consolidates memories), Protective (Evolutionary view that sleep conserves energy when good is scarce.) |
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People who have trouble sleeping often have trouble maintaining what phase of sleep? |
Stage Two |
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Raphe Nuclei |
Maintains NREM sleep. Runs along the midline of the caudal reticular formation. Damage to the area produces insomnia. |
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Basal Forebrain Region |
Induces NREM sleep. Located anterior to the hypothalamus. |
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Lack of serotonin causes.... |
Insomnia. |
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Caudal Reticular Formation |
Produces REM sleep |
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What structure iniates REM sleep? |
Caudal reticular formation |
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Locus Coerulus activity inhibits what? |
The Caudal Reticular Formation and the initiation of REM sleep. |
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How many dreams does a person have per night? |
4 to 6 |
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REM sleep correlates with what neurotransmitter? |
Achetocholine |
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Insomnia is more prevalant in what groups? |
Older adults and women. Also, people who are widowed, divorced, or separated. |
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Treatments for Insomnia |
Sleep hygiene, controlled sleep, benzodiazepine zolpidem |
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Form of insomnia that occurs when a person stops taking a sleeping medication. (Or takes a lower than normal dose.) |
Drug-dependant Insomnia |
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Repeated interuption of sleep caused by the cessation of breathing |
Sleep apnea |
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Treatments for Sleep Apnea |
Weight loss, oral appliances, CPAP machines, and surgery. |
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Sleepwalking occurs during... |
NREM sleep |
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Cataplexy |
Sudden complete lack of muscle tone |
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Which is more common? Sleep paralysis or cataplexy? |
Cataplexy. Only 20% of narcoleptics experience sleep. |
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Narcolepsy is caused by problems with what gene? |
Hypocretin Receptor 2 gene |
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How is narcolepsy treated? |
Medication(Anphetamine, antidepressants) and theraputic naps |
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REM Behavior Disorder |
Physically acting out dreams due to lack of postural muscle paralysis during REM sleep. Caused by damage to the magnocellular nucleus. |
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Androstenedione
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An adrenal adrogen hormone that affects the sexual responsivity in a pre-menopausal woman. It's similar to testosterone. |
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Pheremone |
A chemical released into the enviroment and used for communication within a species; can be used to signal reproductive readiness; play a role in regulating reproductive cycles |
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Oxytocin |
A posterior pituitary hormone that plays a role in sexual arousal, orgasm, nest-building, suckling, and bonding with offspring. |
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Medial Preoptic Area |
Elicits sexual behavior in females. Involved in sexual motivation in males. Located in anterior hypothalamus. |
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Ventromedial Hypothalamus |
Responsible for the influence of estrogen on female sexual behavior. |
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How does the hypothalamus affect male sexual behavior? |
Indirectly: stimulating the creation and release of testosterone |
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Aqcuired sexual motive |
A learned sexual response produced through conditioning |
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What is loudness measured in? |
Decibels |
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What is fequency measured in? |
Hertz |
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A sounds complexity, percieved as timbre, comes from what? |
The complexity of the sound way. |
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Pitch comes from what quality of a sound wave? |
Frequency. |
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Loudness comes from what quality of a sound wave? |
Amplitude. |
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Timbre |
The purity of a sound; The combination of frequencies that gives each sound its characteristic quality |
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The stapes (stirrup) attaches to what part of the ear? |
Oval window |
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Activation Effect |
Effect of hormones on sexual responsivity |
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Stages of Stress |
Alarm --> Resistance --> Exhaustion |
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The sexually dimorphic nucleus is bigger in ____ than in ______. |
Males, females. |
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James-Lange Theory of Emotion |
Stimulus --> Arousal --> Emotion |
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Cannon-Bard Theory of Emotion |
Stimulus --> Thalamus ---> Physiological Reaction and Emotion simultaneously |
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Schachter's Cognitive Model |
Stimulus --> Physiological Response --> Attribution of Response --> Emotion
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Kindling |
Repeated stimulation of the amygdala that produces structural changes that make an animal more prone to seizures. |