Brain Waves and Neuronal Activity: A Comprehensive Guide, Quizzes of Psychology

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TERM 1 Beta Waves DEFINITION 1 Irregular, fastest waves at 14-30 Hz, amplitude of 2-20 uV; Common when a person is involved in mental or physical activity; Usually seen on both sides in symmetrical distribution (mostly frontal lobe activity); Some evidence that excessive amounts can reflect ADD TERM 2 Alpha Waves DEFINITION 2 Rhythmic, 8-13 Hz, magnitude of 20-60 uV; Present when sitting quietly, relaxed position, eyes closed; derived from white matter of brain; present during most of life esp beyond age 13; can also occur before skilled actions such as aiming and golf putting; Strongest over Occipital (back of head) Cortex and also over Frontal Cortex; linked to extroversion, creativity TERM 3 Theta Waves DEFINITION 3 4-7 Hz, 20-100 uV; displeasure, pleasure & drowsiness in young adults; BORDEM, light sleep easy to wake up "was i even sleeping?" more frequent in children than adults; Believed to reflect activity from the limbic system and hippocampus regions; abnormal in awake adults but normal in kids up to 13 years old; observed in anxiety TERM 4 Delta Waves DEFINITION 4 .5- 3.5Hz, amp of 20-200 uV; most recuperative for neurons; appears only during deep sleep difficult to wake up; newborn babies have lots of delta even when awake until age 1; ADD naturally increase rather than decrease delta activity when trying to focus TERM 5 periodoxial sleep DEFINITION 5 looks like someone's awake, but really dreaming. Dream states produce lots of Beta waves TERM 6 10-20 System DEFINITION 6 international EEG nomenclature for the standard placement of electrodes on the scalp. Refer to the 10% or 20% inter- electrode distance TERM 7 10-20 scripts DEFINITION 7 O-Occiptal lobe; P-parietal lobe; F-frontal lobe; T-temporal lobe (where you put the electrode) TERM 8 10-20 # subscripts DEFINITION 8 electrodes with ODD subscripts means LEFT hemisphere; EVEN subscripts means RIGHT hemisphere TERM 9 Z subscript / Z Line DEFINITION 9 Z Line--runs down longitudinal fissure that separates Right and Left hemispheres; if recording info at Z, you're measuring activity coming from Right and Left hemisphere...so you can distinguish between the two TERM 10 C (Cz, C2, C4) / C Line DEFINITION 10 C Line--electrodes placed over Central Colcus TERM 21 Psychophysiology DEFINITION 21 the study of relations between psychological manipulations and resulting physiological responses, measure in the living organism, to promote understanding of the relation between mental and bodily processes; DV's are physiological (BP, HR) and IV's are psychological (prob solving) TERM 22 Egyptians DEFINITION 22 first to record thoughts on what brain does; brain is the locus of mental activity TERM 23 Hippocrates DEFINITION 23 Father of Modern Medicine; brain is central to behavior; 4 Humors--have to keep the 4 humors (fluids) in balance TERM 24 Plato DEFINITION 24 Mental activities and the soul reside in the brain; Dualism: the body and soul are separate TERM 25 Aristotle DEFINITION 25 Brain was simply the body's radiator for cooling the body fluids; Monism: the body and soul comprised a single entity TERM 26 Galen DEFINITION 26 first experimental neurologist TERM 27 Gall DEFINITION 27 phrenology: study of bumps on the skull, figuring personality TERM 28 Flourens DEFINITION 28 sensory/motor function, localization, brain works as whole TERM 29 Broca DEFINITION 29 speech center of the brain, only in Left hemipshere TERM 30 James-Lange Theory DEFINITION 30 We have experiences, and as a result our autonomic nervous system creates physiological events such as muscular tension, HR increase. *Emotions happen as a result of these, rather than being the cause of them. Event --> arousal --> interpretation --> emotion; Perception of danger->escape behavior->then feeling of fear TERM 31 Cannon-Bard Theory DEFINITION 31 When a stimulating event happens, we feel emotions and physiological changes (HR, sweating) at the same time. Appraisal is key. Event--> simultaneous arousal & emotions; Danger->fear->flee TERM 32 central nervous system (CNS) DEFINITION 32 major branch of nervous system: brain and spinal cord TERM 33 Peripheral Nervous System (PNS) DEFINITION 33 other major branch of nervous system; sensory and motor neurons which innervate organs, muscles, glands, etc. Nervous tissues outside brain and spinal cord, including 31 spinal nerves and 12 cranial nerves *Comprised of Autonomic Nervous System and Somatic Nervous System TERM 34 Somatic Nervous System DEFINITION 34 branch of PNS; system consisting of motor and sensory nerves that control voluntary functions, serves mainly skin and skeletal muscles TERM 35 Autonomic Nervous System (ANS) DEFINITION 35 branch of PNS; Motor and sensory nerves that control involuntary functions; a regulator and controller of many so- called automatic body activities such as digestion, BP, and body temperature **2 parts ANS: Sympathetic Nervous System, Parasympathetic Nervous System