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Behavioral Neuroscience
Exam 1
131
Physiology
Undergraduate 3
01/28/2012

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Term
Biological Psychology
(1.1)
Definition
the study of the physiological evolutionary, and developmental mechanisms of behavior and experiences.
Term
What is the dorsal view of the brain?(1.1)
Definition
From the top
Term
Whats the ventral view of the brain?
(1.1)
Definition
from the bottom
Term
whats the posterior view of the brain?
(1.1)
Definition
from the back
Term
whats the anterior view of the brain/Nervous System?
(1.1)(2.1)
Definition
from the front
Term
What are the two types of cells in the brain?
(1.1)
Definition
Neurons and Glia
Term
Neurons
(1.1)
Definition
convey messages to one another and to muscles and glands.

they very enormously in size, shape and function
Term
Glia Cells
(1.1)
Definition
smaller than neurons, but do not convey information over great distances
Term
PHYSIOLOGICAL EXPLANATION Explanation.... of behavior
(1.1)
Definition
Relates a behavior to the activity of the brain and other organs. IT deals with the machinery of the body
Term
ONTOGENETIC explanation of behavior
(1.1)
Definition
describes how a structure or behavior develops, including the influences of genes, nutrition, experiences, and their interactions
Term
EVOLUTIONARY explanation of behavior
(1.1)
Definition
reconstructs the evolutionary history of a structure or behavior
Term
FUNCTIONAL explanation of behavior
(1.1)
Definition
describes why a structure or a behavior evolved as it did
Term
Genetic Drift
(1.1)
Definition
Within a small, isolated population, a gene that spreads by accident
Term
How does evolutionary perspective differ from a functional explanation?
(1.1)
Definition
An evolutionary explanation states what evolved from what. For example, humans evolved from early primates and therefore have certain features that we inherited from those ancestors, even if the features are not useful to us today. A functional explanation states why something was advantageous and therefore evolutionarily selected.
Term
Mind-Body/Mind-Brain Problem
(1.1)
Definition
What is the relationship between the mind and the brain?
Term
Dualism
(1.1)
Definition
The belief that the mind and the body are different kinds of substances that exist independently
Term
Rene Decartes
(1.1)
Definition
Defended dualism, suggested that the mind and the brain interact at a single point in space, which he suggested the pineal gland
Term
Why do neuroscientists reject dualism?
(1.1)
Definition
Dualism conflicts with one of the cornerstones of physics, known as the law of the conservation of matter and energy
Term
Monism
(1.1)
Definition
The belief that the universe consists of only one kind of substances
Term
Materalism(Monism)
(1.1)
Definition
The view that everything that exist is material or physical.
Term
Mentalism (Monism)
(1.1)
Definition
The view that only the mind really exist and that the physical world could not exist unless some mind were aware of it.
Term
Identity Position (Monism)
(1.1)
Definition
The view that mental processes and certain kinds of brain processes are the same thing, described in different terms.
Term
What is the main reason nearly all scientist and philosophers reject the idea of dualism?
(1.1)
Definition
Dualism contradicts the law of the conservation of matter and energy. According to that law, the only way to influence matter and energy, including that of your body is to act on it with other matter and energy.
Term
Solipism
(1.1)
Definition
I alone exist, or I alone am conscious.
Term
What is "The problem of the minds"?
(1.1)
Definition
The difficulty of knowing whether other people (or animals) have conscious experiences.
Term
Who distinguished between the hard and easy problem of consciousness?
(1.1)
Definition
David Chalmers (1995)
Term
The Easy Problem of Consciousness
(1.1)
Definition
What is the difference between wakefulness and sleep and the mechanisms that enable us to focus our attention?
Term
The Hard Problem of Consciousness
(1.1)
Definition
Why and how any kind of brain activity is associated with consciousness?
Term
What is meant by the Hard Problem?
(1.1)
Definition
The hard problem is why minds exist at all in a physical world. Why is there such a thing as consciousness, and how does it relate to brain activity?
Term
Neuroscientist
(1.1)
Definition
Studies anatomy, biochemistry, or physiology of the nervous system.
Term
Behavioral Neuroscientist
(1.1)
Definition
Investigates how functioning of the brain and other organs influence behavior.
Term
Cognitive Neuroscientist
(1.1)
Definition
Uses brain research, such as scans of brain anatomy or activity, to analyze and explore people's knowledge, thinking, and problem solving.
Term
Psychophyiologist
(1.1)
Definition
Measure heart rate, breathing rate, brain waves, and other body processes and how they vary from one person to another or one situation to another.
Term
Neurochemist
(1.1)
Definition
Investigates the chemical reactions in the brain.
Term
Comparative Psychologist
(1.1)
Definition
Relates behavior, especially social behaviors, including those of humans, to the functions they have served and, therefore, the presumed selective pressures that caused them to evolve.
Term
Practitioner Fields of Psychology
(1.1)
Definition
In most cases, their work is not directly related to neuroscience. However practitioners often need to understand it enough to communicate with a clients's physician.
Term
Clinical Psychologist
(1.1)
Definition
Requires PhD or PsyD. Employed by hospital, clinic, private practice, or college. Helps people with emotional problems.
Term
Counseling Psychologist
(1.1)
Definition
Requires PhD or PsyD. Employed by hospital, clinic, private practice, or college. Helps people make educational, vocational, and other decisions.
Term
School Psychologist
(1.1)
Definition
Requires master's degree or PhD. Most are employed by a school system. Identifies educational needs of schoolchildren, devises a plan to meet the needs, and then helps teachers implement it.
Term
Medical Fields
(1.1)
Definition
Practicing medicine requires an MD plus about 4 years of additional study and practice in a specialization. Physicians are employed by hospitals, clinics, medical schools and in private practice. Some conduct research in addition to seeing patients.
Term
Neurologist
(1.1)
Definition
Treats people with brain damage or diseases of the brain.
Term
Neurosurgeon
(1.1)
Definition
Performs brain surgery
Term
Psychiatrist
(1.1)
Definition
Helps people with emotional distress or troublesome behaviors, sometimes using drugs or other medical procedures
Term
Allied Medical Field
(1.1)
Definition
These fields ordinarily requires a master's degree or more. Practitioners are employed by hospitals, clinics, private practice, and medical schools.
Term
Physical Therapist
(1.1)
Definition
Provides exercise and other treatments to help people with muscle or nerve problems, pain, or anything else that impairs movement
Term
Occupational Therapist
(1.1)
Definition
Helps people improve their ability to perform functions of daily life, for example, after a stroke.
Term
Social Worker
(1.1)
Definition
Helps people deal with personal and family problems. The activities of a clinical social worker overlap those of a clinical psychologist.
Term
How many neurons does the adult human brain contain?
(2.1)
Definition
100 Billion
Term
Approximately how many neurons are in the Cerebral Cortex?
(2.1)
Definition
12-15 Billion
Term
Approximately how many neurons are in the spinal cord?
(2.1)
Definition
1 Billion
Term
Approximately how many neurons are in the Cerebellum?
(2.1)
Definition
70 Billion
Term
Membrane
(2.1)
Definition
A structure that separates the inside of the cell from the outside environment. (Composeed of two layers of fat molecules that are free to flow around one another)
Term
What permits a controlled flow of water, oxygen, sodium, potassium, calcium, chloride, and other important chemicals?
(2.1)
Definition
Specific Protein Channels
Term
Nucleus
(2.1)
Definition
the structure that contains the chromosomes
Term
Tochondrion (PL:Mitochondria)
(2.1)
Definition
is the structure that performs metabolic activities, providing the energy that the cell requires for all other activities.(require fuel and oxygen to function)
Term
Ribosomes
(2.1)
Definition
the site at which the cell synthesizes new protein molecules
Term
Endoplasmic Reticulum
(2.1)
Definition
A Network of thin tubes that transport newly synthesized proteins to other locations
Term
Motor Neuron
(2.1)
Definition
Has its soma in the spinal chord. It receives excitation from other neurons through its dendrites and conducts impulses along its axon to a muscle.
Term
Sensory Neuron
(2.1)
Definition
Is specialized at one end to be highly sensitive to a particular type of stimulation, such as light, sound or touch.
Term
Dendrites
(2.1)
Definition
are branching fibers that get narrower near their end.
Term
Synaptic Receptors
(2.1)
Definition
Lines the dendrite surface, at which the dendrite receives information from other neurons.
Term
Dendritic Spines
(2.1)
Definition
the short outgrowths that increase the surface area available for synapses
Term
Cell Body or Soma
(2.1)
Definition
Contains the nucleus, ribosomes, mitochondria, and other structures found in most cells. ( much of the metabolic work of the neuron occurs here)
Term
Axon
(2.1)
Definition
Is the information sender of the neuron, conveying an impulse toward other neurons or an organ or an muscle
Term
Myelin Sheath
(2.1)
Definition
Insulates the axon to speed up nerve impulses
Term
Nodes of Ranvier
(2.1)
Definition
Interruptions on between the myelin sheath on the axon
Term
Presynaptic Terminal
(2.1)
Definition
At the end of the axon's branches, each of which sells at its tips. This is the point from which the axon releases chemicals that cross through the junction between one neuron and the next.
Term
How many axon and dendrites can a neuron have?
(2.1)
Definition
A neuron can have any number of dendrites but only one axon.
Term
Afferent Axon
(2.1)
Definition
brings information into a structure
(ADMISSION)
Term
Efferent Axon
(2.1)
Definition
Carries information away from a structure
(EXIT)
Term
Interneuron or Intrinsic Neuron
(2.1)
Definition
If a cells dendrites and axon are entirely contained within a single structure
Term
What are the widely branching structures of a neuron called? And what is the long thin structure that carries information to another cell called?
(2.1)
Definition
The widely branching structures of a neuron are called dendrites, and the long thin structure that carries information to another cell is called the axon
Term
What does the shape of a neuron determine?
(2.1)
Definition
The function of the neuron.
Term
Purkinje Cells
(2.1)
Definition
neuron in the cerebellum with widely branching dendrites
Term
Glia
(2.1)
Definition
Do not transmit information over long distances as neurons do, although they do exchange chemicals with adjacent neurons
Term
Astrocytes
(2.1)
Definition
Star shaped glia cell that wraps around the presynaptic terminals of a group of functionally related axons. Astrocytes helps synchronize the activity of the axons, enabling them to send messages in waves. They also remove waste material created when neurons die and control thee amount of blood flow to each brain area. During periods of heightened activity in some brain areas, astrocytes dilate the blood vessels to bring more nutrients into that area.
Term
Microglia
(2.1)
Definition
Small glia cells that remove waste material as well as viruses, fungi, and other microorganisms
(function as part of the immune-system)
Term
Oligodendrocytes
(CNS)
(2.1)
Definition
Specialized type of glia that build the myelin sheath that surround and insulate certain vertebrate axon
Term
Shwann Cells
(PNS)
(2.1)
Definition
Specialized types of Glia that builds the meylin sheaths that surround and insulate certain verebrate axons
Term
Radial Glia
(2.1)
Definition
Guides the migration of neurons and their axons and dendrites during embryonic development. (after embryological development is finishes most radial glia differentiate into neurons and a smaller number into astrocytes and oligodendrocytes
Term
Identify the four major structures that compose a neuron?
(2.1)
Definition
Dendrites, soma(cell body), axon, and presynaptic
Term
Which kind of glia cell wraps around the synaptic terminals of axons?
(2.1)
Definition
Astrocytes
Term
Blood Brain Barrier
(2.1)
Definition
The mechanism that keeps most chemicals out of the vertebrate brain
Term
Identify one major advantage and one disadvantage of having a blood-brain barrier?
(2.1)
Definition
The blood-brain barrier keeps out viruses(an advantage) and also keeps out most nutrients (a disadvantage)
Term
Endothelial Cells
(2.1)
Definition
Form the wall of the blood-brain barrier. Outside the brain, such cells are separated by small gaps, but in the brain, they are joined together so tightly that virtually nothing passes between them
Term
Which chemicals cross the blood-brain barrier passively?
(2.1)
Definition
Small, uncharged molecules such as oxygen and carbon dioxide cross the blood-brain barrier passively. So do chemicals that dissolve in the fats of the membrane.
Term
Which chemicals cross the blood-brain barrier active transport?
(2.1)
Definition
Glucose, amino acids, purines, choline, certain vitamins,iron, and a few hormones.
Term
Glucose
(2.1)
Definition
a simple sugar that is the nutrients for vertebrate neurons
Term
Korsakoff's syndrome
(2.1)
Definition
a conditioned marked by memory impairment caused by the prolonged deficiency of thiamine(vitamin b1)
Term
Active Transport
(2.1)
Definition
a protein-mediated process that expends energy to pump chemicals into the brain.
Term
Passive (transport)
(2.1)
Definition
molecules that dissolve in the fats of the membrane.
Term
What are the four main categories of methods for studying brain function?
Definition
1)Correlate brain anatomy with behavior
2)Record brain activity
3)Examine the effects of brain damage
4)Examine the effects of stimulating some brain area
Term
Phrenology (Franz Gall)
Definition
He assumed that bulges and depressions on peoples skull corresponded to the brain areas below them in a process that related anatomy to behavior
Term
What does the amount of gray matter in the inferior(lower) partial lobe correlate to what in adolescents?
Definition
adolescents vocabulary
Term
Computerized Axial Tomography
(CT or CAT Scan)
Definition
-A physician injects a dye into the blood to increase contrast in the image
-then places a persons head into a CT scanner in which x-rays are passed through the skull to a detector on the opposite side.
-CT scans help detect tumors and other structural abnormalities
-MAPS BRAIN AREAS, BUT REQUIRES EXPOSURE TO X-RAYS
Term
Magnetic Resonance Imaging
(MRI)
Definition
-any atom with odd-numbered atomic weight has an axis of rotation
-applies a powerful magnetic field to align all the axis of rotation and then tilts then with a brief radio frequency
-creates an anatomical image of the brain
-MAPS BRAIN AREA IN DETAIL, USING MAGNETIC FIELDS
Term
Researchers today sometimes relate differences in people's behavior to differences in their brain anatomy. How does their approach differ from that of the phrenologist?
Definition
The phrenologists drew conclusions based on just one or a few people with some oddity of behavior. Today's researches compare groups statistically.Also, today's researchers examine the brain itself, not the skull.
Term
Electorencephalograph
(EEG)
Definition
-records electrical activity of the brain through electrodes--ranging from just a few to more than a hundred--attached to the scalp
-This device can record spontaneous brain activity or activity in response to a stimulus in which case we call the results EVOKED POTENTIALS or EVOKED RESPONSES
-RECORDS FROM SCALP; MEASURES CHANGES BY MS, WITH BUT LOW RESOLUTION OF LOCATION OF THE SIGNAL
Term
Magnetoencephalograph
(MEG)
Definition
-measures the faint magnetic fields generated by brain activity
-Researchers using MEG can identify the times at which various brain areas respond and thereby trace a wave of brain activity from its point of origin to all the other areas that process it
-SIMILAR TO EEG BUT MEASURES MAGNETIC FIELDS
Term
Positron-Emission Tomography
(PET)
Definition
Provides a high resolution image of activity in a living brain by recording the emission of radioactivity from injected chemicals
-The area showing the most radioactivity are the ones with the most blood flow and, therefore presumably the most brain activity
-MEASURES CHANGES OVER BOTH TIME AND LOCATION BUT REQUIRES EXPOSING THE BRAIN TO RADIATION
Term
Functional Magnetic Resonance Imaging
(FMRI)
Definition
-MEASURES CHANGES OVER ABOUT A 1 SECOND, IDENTIFIES LOCATION WITHIN 1-2MM, NO USE OF RADIATION
Term
Broca's Area
Definition
Controls the ability to speak
Term
Brain Damage
Definition
-Can produce an inability to recognize faces, an inability to perceive motion, s shift of attention to the right side of the body and the world, and a host of other highly specialized deficits
Term
Lesion
Definition
damage to a brain area
Term
Ablation
Definition
a removal of brain area
Term
Sterotaxic Instrument
Definition
A device used to damage a structure in the interior of the brain
Term
Sham Lesion
Definition
Term
Gene-Knockout Approach
Definition
Researchers use bio-medical methods to direct a mutation to a particular gene that is important for certain types of cells, transmitters, or receptors
Term
Transcranial Magnetic Stimulation
Definition
The application of an intense magnetic field to a portion of the scalp, temporarily inactivates neurons below the magnet
-BRIEF, MILD APPLICATION ACTIVATES UNDERLYING BRAIN AREA
Term
How do the effects of brief, mild magnetic stimulation differ from those of longer, more intense stimulation?
Definition
Brief, mild magnetic stimulation on the scalp increases activity in the underlying brain areas, whereas longer, more intense stimulation blocks it.
Term
Why does electrical or magnetic stimulation of the brain seldom produce complex, meaningful sensations or movement?
Definition
Meaningful sensations and movements require a pattern of precisely timed activity in a great many cells, not just a burst of overall activity diffused in one area
Term
STIMULATING ELECTRODES
Definition
INVASIVE; USED WITH LABORATORY ANIMALS, SELDOM WITH HUMANS
Term
Why are both brain size and brain-to-body ratio unsatisfactory ways of estimating animal intelligence?
Definition
If we consider ourselves to be the most intelligent species-and admittedly, that is just an assumption-we are confronted with the fact that we have neither the largest brains nor the highest brain-to-body ratio depends on selection for thinness as well as selection for brain size. Furthermore, animal intelligence is undefined and poorly measured, so we cannot even determine what correlates with it.
Term
Why do recent studies show a stronger relationship between brain size and IQ than older studies did?
Definition
The use of MRI greatly improves the measurement of brain size
Term
What evidence indicates that the genes that control human brain size also influence IQ?
Definition
For pairs of monozygotic twins, the size of one twin's brain correlates significantly with the other twin's IQ(as well as his or her own). Therefore, whatever genes increase the growth of the brain also increases IQ.
Term
On the average, although men have larger brains than women, men and women have equal IQ scores. What is a likely explanation?
Definition
Women have more and deeper sulci in the cortex and therefore about the same amount of surface area and neurons than men do.
Term
Atrophy/death of neurons
Definition
50,000 per day (between ages 20 and 75)
Term
Maximum firing frequency of neuron
Definition
250-2,000 Hz (0.5-4 ms intervals)
Term
Qualia
Definition
the quality of a conscious experience is more than just describable facts
Term
Doctrine of specific nerve energies:
Definition
nerves are electrical in nature and the energy conducted through them is the same wherever they are, but their areas of origin and termination are what gives nerves their specific meaning
Term
Cerebral cortex:
Definition
sensory & motor for targeted action (plan, sense, remember)
Term
Cerebellum:
Definition
smooth integration of behaviors & sensations
Term
Spinal cord:
Definition
ascending & descending, more direct input and output
Term
Central nervous system
Definition
-Perceive, initiate, activate, integrate, reflexes
-Within bony structures
-Group called nucleus (nuclei)
-Neuron migration inhibited in adults
-Protected from bloodstream
Term
Peripheral nervous system
Definition
-Incoming sensory and outgoing effectors
-Motor or glandular (e.g. tear ducts)
-Outside bony structures
-Group called ganglion (ganglia)
-Neuron migration replacement allowed in adults
-Mingles with bloodstream
Term
The glial cells that act as the brain’s immune cell against viruses are?
Definition
microglia
Term
How/where do afferent neuronal signals travel? (compare the terms afferent and efferent in this answer)
Definition
They travel into the neuron(admission)
Term
What cells perform metabolic activities generating energy in the form of ATP.
Definition
Mitochondria
Term
What are the branching fibers that extend the input region of neurons?
Definition
Dendrites
Term
A neuron whose dendrites and axon are entirely contained within a region is called a(n)
Definition
Intrinsic Neuron
Term
Name and describe two different methods for measuring brain function (not anatomy). For each, mention both the technique name and what is done.
Definition
1. PET Scan – brain scanning following radioactive chemical dye injected into bloodstream
2. fMRI Scan – brain scanning distinguishing oxygenated blood flow to brain using magnetic fields
3. Microdialysis – measuring chemical release from neurons using semi-permeable membranes
4. Cortical cup – measuring chemical release from brain surface by collecting solution sitting over skull penetration
5. Push-pull cannula – measuring chemical release from brain region by pushing in and pulling out inert solution
6. Voltammetry – measuring chemical release from neurons using their electrical oxidation or reduction responses
7. Electroencephalograph (EEG) – measuring brain activity from electrical signals at skull surface (mostly cortical) particularly using evoked potentials
8. Electrophysiology – measuring brain neuron activity directly in terms of their electrical signals using electrodes
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