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Tissue destruction; a brain lesion is a naturally or experimentally caused destruction of brain tissue.
Lesion
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An amplified recording of the waves of electrical activity that sweep across the brain's surface. These waves are measured by electrods placed on the scalp.
Encephalogram
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A series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body.
CT scan (Also called CAT scan).
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A visual display of brain activity that detects where a radioactive form of glucose goes while the brain perfoms a given task.
PET scan
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A technique that uses magnetic fields and radio waves to produce computer generated images of soft tissue. These scans show brain anatomy.
MRI
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A technique for revealing bloodflow and, therefore, brain activity by comparing successive MRI scans. These scans show brain function.
fMRI
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The oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull; this structure is responsible for automatic survival function.
Brainstem
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The base of the brainstem; controls heartbeat and breathing.
Medulla
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A nerve network in the brainstem that plays an important role in controlling arousal.
Reticular formation
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The brain's sensory switchboard, located on top of the brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla.
Thalamus
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The "little brain" at the rear of the brainstem; functions include processing sensory input and coordinating movement ouput and balance.
Cerebellum
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Doughnut-shaped neural system (including the hippocampus, amygdala, and hypothalamus) located below the "cerebral hemispheres", associated with emotions and drives.
Limbic system
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Two lima bean-sized neural clusters in the limbic system; linked to emotion.
Amygdala
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A neural structure lying below (hypo) the thalamus; it directs several maintenance activities (eating, drinking, body temperature), helps govern the endocrine system via the pituitory gland, and is linked to emotion and reward.
Hypothalamus
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The intricate fabric of interconnected neural cells covering the cerebral hemispheres; the body's ultimate control and information processing center.
Cerebral cortex
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Cells in the nervous system that support, nourish, and protect neurons.
Glial cells (glia)
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Portion of the cerebral cortex lying just behind the forehead; involved in speaking and muscle movements and in making plans and judgments.
Frontal lobes
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Portion of the cerebral cortex lying at the top of the head and toward the rear; receives sensory input for touch and body position.
Parietal lobes
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Portion of the cerebral cortex lying at the back of the head; includes areas that receive information from the visual fields.
Occipital lobes
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Portion of the cerebral cortex lying above the ears; includes the auditory areas, each receiving information primarily from the opposite ear.
Temporal lobes
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An area at the rear of the frontal lobes that controls voluntary movements.
Motor cortex
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Area at the front of the parietal lobes that registers and processes body touch and movement sensations.
Sensory cortex
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Areas of the cerebral cortex that are not involved in primary motor or sensory functions; rather, they are involved in higher mental functions such as learning, remembering, thinking, and speaking.
Association areas
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Impairment of language, usually caused by left hemisphere damage either to Broca's area (impairing speaking) or to Wernicke's area (impairing understanding).
Aphasia
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Controls language experession-an area, usually in the left frontal lobe, that directs the muscle movements involved in speech.
Broca's Area
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Controls language reception-a brain area involved in language comprehension and expression; usually in the left temporal lobe.
Wernicke's Area
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The brain's ability to change, especially during childhood, by reorganizing after damage or by building new pathways based on experience.
Plasticity
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The formation of new neurons.
Neurogenesis
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The large band of neural fibers connecting the two brain hemispheres and carrying messages between them.
Corpus callosum
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A condition resulting from surgery that isolates the brain's two hemispheres by cutting the fibers (mainly those of the corpus callosum) connecting them.
Split brain
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Our awareness of ourselves and our environment.
Consciousness
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The interdisciplinary stidy of the brain activity linked with cognition (including perception, thinking, memory, and language).
Cognitive neuroscience
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The principle that information is often simultaneously processed on separate conscious and unconscious tracks.
Dual processing
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Breathing and heartbeat are controlled by the...
Medulla.
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Perception, thinking, and language can operate at conscious, deliberate levels and also at unconscious, automatic levels. This best describes...
Dual processing.
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A PET scan best allows researchers to determine...
The functions of various brain regions.
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Damage to the hippocampus would result in...
Memory problems.
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Surgical stimulation of the sensory cortex might result in the false sensation...
That someone is tickling you.
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Awareness of ourselves and our environment best describes...
Consciousness.
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The link between the nervous system and the endocrine system is maintained by the...
Hypothalamus.
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A researcher interested in determining the size of a particular area of the brain would be most likely to use a(n)...
MRI.
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The support cells that provide nourishment and help the brain in numerous other ways are called...
Glial cells.
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Which of the following is a task more likely to be accomplished by the right hemisphere of the brain?
Recognizing a friend's face.
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If you flashed a picture of a spoon to the left visual field of a person whose corpus calllosum had been severed (so it was transmitted to her right hemishpere), she would...
Be able to draw a spoon with her left hand but would not be able to say she had seen a spoon.
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Brain plasticity refers to the...
Ability of brain tissue to take on new functions.
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When Heinrich Kluver and neurosuregeon Paul Bucy surgically lesioned the amygdala of a rhesus monkey's brain, the monkey...
Became less aggressive.
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The reward deficiency syndrome argues that addictive disorders may be partially explained by genetic flaws in the...
Limbic system.
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An individual experiences brain damage that produces a coma. Which part of the brain was probably damaged?
Reticular formation.
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What is the oldest part of the brain, and is responsible for automatic survival functions?
The brainstem.
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Controls heartbeat and breathing.
Medulla
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Just above the medulla, helps coordinate movements.
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Filters incoming stimuli and relays important information to other areas of the brain. Affects arousal.
Reticular formation
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Helps us judge time, modulate our emtions, and discriminate sounds and textures; also coordinates voluntray movement. Coordinates muscle movement and helps process sensory information.
Cerebellum
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The two halves of the brain.
Cerebral hemispheres
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What is at the border between the brain's older parts and the cerebral hemishperes-the two halves of the brain?
The limbic system.
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What system is associated with emotion, memory, and drives?
The limbic system.
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One limbic system component, processes memory.
Hippocampus
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Influence aggression and fear.
Amygdala
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Chain of command governing bodily maintenance. Involved in various bodily maintenance functions, pleasurable rewards, and the control of the hormonal system.
Hypothalamus
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Some researchers believe that addictive disorders, such as alcohol dependence, drug abuse, and binge eating, may stem from what?
Reward deficiency syndrome
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A genetically disposed deficiency in the natural brain systems for pleasure and well-being that leads people to crave whatever provides that missing pleasure or relieves negative feelings.
Reward deficiency syndrome
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The two large hemispheres that contribute 85 percent of the brain's weight.
Cerebrum
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Support, nourish, and protect neurons.
Glial cells
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Stepping back to consider the whole cortex, each hemisphere is divided into four _____, geographic subdivisions separated by prominent ________, or folds.
Lobes, fissures.
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Invovled in speaking and muscle movements and in making plans and judgments.
Frontal lobes
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Receives sensory input for touch and body position.
Parietal lobes
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Receives information from the visual fields.
Occipital lobes
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Receiving information primarily from the opposite ear.
Temporal lobes
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Moreover, stimulating parts of this region in the left or right hemisphere caused movements of specific body parts on...
the opposite side of the body.
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Controls voluntary movements.
Motor cortex
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Registers and processes body touch and movement sensations.
Sensory cortex
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Involved in higher mental functions such as learning, remembering, thinking, and speaking.
Association areas
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Judgment, planning, processing (personality).
Association areas (frontal lobes).
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Mathematician and spatial reasoning.
Association areas (parietal lobes)
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When you read aloud, the words..
- (1) Register in your visual area
- (2) Are relayed to a second brain area, the angular gyrus, which transforms the words into an auditroy code that
- (3) Is received and understood in the nearby Wernicke's area, and
- (4) Is sent to the Broca's area, which
- (5) Controls the motor cortex as it creates the pronounced word.
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Aims to rewire brains by restraining a fully functioning limb and forcings use of the "bad hand" or the uncooperative leg.
Constraint-induced therapy
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Visual area of right hemisphere.
Left visual field
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Visual area of left hemisphere.
Right visual field
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Later units will explore our hidden mind at work in research on unconcious _______, on concious (________) and unconcious (_______) memories, on concious versus automatic prejudices, and on the out-of-sight processing that enables sudden insights and creative moments.
Priming, explicit, implicit.
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Enables us "to create the mental furniture that allows us to think about the world"-to recognize things and to plan future actions.
Visual perception track
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Gudies our moment-to-moment actions.
Visual action track
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