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Psych
Psych brain flashcards
49
Psychology
Undergraduate 1
02/08/2011

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Term
Electroencephalography (EEG)
Definition
device that measures and amplifies slight electrical changes on the scalp that reflect brain activity.
Term
Hindbrain w/functions-
Definition
the posterior of the three primary divisions of the developing vertebrate brain or the corresponding part of the adult brain that includes the cerebellum, the medulla oblongata, and in mammals the pons and that controls autonomic functions and equilibrium. responsible for protective reflexes (coughs and sneezing).
Term
Midbrain w/functions
Definition
the middle of the three primary divisions of the developing vertebrate brain or the corresponding part of the adult brain between the forebrain and hindbrain.

o General arousal

o Sleep / wake cycles

o Pain perception
Term
Superior colliculi (left and right)
Definition
Visual targeting – saccades (saccadic movements)
Term
Inferior colliculi
Definition
(left and right)

o Auditory targeting
Term
Basal forebrain (hypothalamus & thalamus)
Definition
(hypothalamus & thalamus)
Term
Hypothalamus: Control of
Definition
§ Pituitary gland (extension of hypothalamus) >> thyroid, adrenals, bone growth

§ Autonomic Nervous System (ANS), immune system

§ Hunger, thirst, body temperature and induction of fever (pyrogens)

§ Sexual orientation

§ Reward and punishment
Term
Thalamus:
Definition
sensory relay station
Term
“Old cortex”
Definition
o Limbic system – complex reaction patterns (“4 F’s”)

o Basal ganglia
Term
Basal ganglia
Definition
background postural (axial) movements

§ smooth pursuit eye movements

§ regulation of foreground/ background thinking (disrupted in OCD)
Term
Autonomic Nervous System w/ branches
Definition
section of the nervous system that controls the functioning of the internal organs, such as the heart.
Term
Limbic system w/functions-
Definition
A group of interconnected structures of the brain including the hypothalamus, amydala, and hippocampus that are located beneath the cortex, are common to all mammals, and are associated with emotions such as fear and pleasure, memory, motivation, and various autonomic functions.
Term
Reticular Formation w/functions-
Definition
a part of the brain that is involved in actions such as awaking/sleeping cycle, and filtering incoming stimuli to discriminate irrelevant background stimuli.It is essential for governing some of the basic functions of higher organisms, and is one of the phylogenetically oldest portions of the brain.
Term
Orienting response
Definition
an organism's immediate response to a change in its environment, when that change is not sudden enough to elicit the startle reflex.
Term
Protective & pathological reflexes-
Definition
Other examples of protective reflexes are blinking when something flies toward your eyes or raising your arm if a ball is thrown your way.
Term
Reflex-
Definition
rapid, automatic, responses to stimuli
Term
Saccades
Definition
quick jump in the focus of the eyes from one point to another
Term
Corpus callosum
Definition
large set of axons connecting the left and right hemispheres of the cerebral cortex and thus enabling the two hemispheres to communicate with each other.
Term
Phrenology
Definition
The study of the shape and protuberances of the skull, based on the now discredited belief that they reveal character and mental capacity.
Term
"Binding problem"
Definition
question of how separate brain areas combine forces to produce a unified perception of a single object.
Term
Parkinson's disease
Definition
condition that affects about 1% of people over the age of 50; the main symptoms are difficulty initiating voluntary movement, tremors, rigidity, and depressed mood.
Term
Effects of prefrontal damage and prefrontal Lobotom
Definition
This is called dynamic aphasia, there is no anomia associated with this type of aphasia and little problem with preserved moter speach. the problem in these people is that their active speach is disturbed severely. They have trouble in forming sentances correctly when speaking verbally. They may have trouble understanding or speaking. They may also end up speaking far more than usual and saying little that would have meaning. Facial movements also occure less often in patients with brain damage.Common effects of frontal lobe damage include difficulty in understanding one's outside environment. This can cause less compliance with rules, slow learning, planning ahead, lack of drive, and risk taking behaviors.
Term
Language areas of brain
Definition
Broca’s (language production) area and Wernikes(language comprehension)
Term
Nonfluent (Broca's)
Definition
aphasia in which expression by speech or writing is severely impaired
Term
fluent (Wernicke's) aphasias
Definition
aphasia characterized by fluent but meaningless speech and severe impairment of the ability understand spoken or written words
Term
Neglect syndrome
Definition
a neuropsychological condition in which, after damage to one hemisphere of the brain, a deficit in attention to and awareness of one side of space is observed. Hemispatial neglect is very commonly contralateral to the damaged hemisphere, but instances of ipsilesional neglect (on the same side as the lesion) have been reported.
Term
Hemispheric lateralization
Definition
the left and right side of the brain, opposite sides see opposite.
Term
the left and right side of the brain, opposite sides see opposite.
Definition
The newer portion of the cerebral cortex that serves as the center of higher mental functions for humans
Term
Convolutions (wrinkles) in neocortex and explanation
Definition
provides for increased surface area.
Term
Contralateral control w/ rationale
Definition
a pattern in which the left half of the brain controls the right half of the body, and the right half of the brain controls the left half of the body.
Term
Effects of split-brain preparation-
Definition
a lay term to describe the result when the corpus callosum connecting the two hemispheres of the brain is severed to some degree.
Term
Neurotransmitters w/ examples-
Definition
a chemical that activates receptors on other neurons.
Term
Cell body (soma)
Definition
contains the nucleus of the cell.
Term
Axon
Definition
a single, long think, straight fiber with branches near its tip.
Term
Dendrites
Definition
widely branching structures that receive input from other neurons.
Term
Axon terminals (terminal buttons)
Definition
bulge at the end of an axon from which the axon releases a chemical called a neurotransmitter.
Term
Synapse
Definition
the specialized junction between one neuron and another, a neutron releases a chemical that either excites or inhibits the next neuron. Regulate everything your nervous system accomplishes.
Term
Pre synaptic membrane-
Definition
a branch ending with a little bulge.
Term
Postsynaptic membrane-
Definition
the neuron on the receiving end of the synapse.
Term
Resting potential
Definition
an electrical polarization across the membrane of an axon
Term
Action potential
Definition
an excitation that travels along an axon at a constant strength, no matter how far it must travel.
Term
Glial cells (glia) and functions
Definition
cell of the nervous system that insulates neurons, removes waste materials, and performs other supportive functions.

e.g. insulates neurons, synchronizes activities among neighboring neighbors.
Term
Neurotransmitter reuptake
Definition
the return to the postsynaptic receptor, diffusion away from the synapse. Or the reabsorption by the axon that released it.
Term
"All-or-none" law
Definition
yes-no or on-off message, like a standard light switch.
Term
Post-synaptic receptors
Definition
recognize neurotransmitters
Term
Amygdala and emotion
Definition
Sub cortical structure deep within the temporal lobe that responds strongly to emotional situations.
Term
Personality changes in TLE
Definition
epilepsy characterized by partial rather than generalized seizures that typically originate in the temporal lobe and are marked by impairment of consciousness, automatisms, unusual changes in behavior, and hallucinations
Term
MM and religiosity
Definition
“rising”, “soaring”, or spiritual feelings, and even seeing bright white lights.
Term
Major endocrine glands and functions
Definition
The endocrine system is instrumental in regulating mood, growth and development, tissue function, metabolism, and sexual function and reproductive processes.
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