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93 Cards in this Set
- Front
- Back
What us bio psych |
Area of psychology that studies biological bases of behaviour |
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Why do we study bio psych |
To understand how our body works and concubines to behavior including mental processes |
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What are the 4 foundation areas of bio psych |
1) philosophy 2) experimental bio 3) darwins theory of natural selection and functionalism 4) experimental psych |
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What is philosophy |
The study of the ultimate nature of existence, reality, knowledge and goodness as discoverable by human reasoning
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What lead to the development of scientific method |
-empiricism -postivism (Both schools of thought in philosophy) |
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What is empiricism |
Knowledge comes from our senses (experience) |
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What is positivism |
Our need to explain and predict should follow logic and inquiry -research should be empirically observable -testable statements should use principles of logic |
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What is the foundation of all sciences |
Philosophy |
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Experimental psychology |
Studying the mind using scientific methods (Structuralism, Fuctionlism, behavoirism) |
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What did Wundt do |
-Father of sttucturalism -used introspection to study structures of the mind |
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What is introception |
???? |
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What was functionalism and who was important in its creation |
-william James -focused on the processed of the mind -replaced strucuralism |
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What did functiinalists focus on |
Emphasized the biological significance of mental processed in adaptation of an organism to the environment |
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What was behaviourism's idea of psychology |
Psychology is an area that studied behaviour and and further reinforced the position of psychology as a science |
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What did experimental psych do |
Provided the foudation of psychology as an scientific discipline, studiny heviour in a systematic way using the experimental method |
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Early psychologist |
Weber and Frechner (psychophsics) James (emtion) Eddinghaus (memory) Lashley and hebb (learning) w |
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What is the physiological explanation |
Describes how activity of the brain and other organ systems relate to behavior |
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What is ontogenetic explanation |
Describes how a structure or behavior develops -takes account the interaction of genes with the environment in producing the final outcome |
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What is the evolutionary explanation |
Describds how a structure or a beaviout evolved over the evolutionary history |
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What is thr functional explanation |
Describes why a structor or behavior evolved as it did -takes into account the adaptive significance of the structure or behavior |
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Why do we use animals is psych |
Essential for learning more about the human and the animal condition |
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What are the two groups of the animal defense movement |
Abolishinists Minimalists |
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What do abolishinists want |
Believe that non human animals should not be used for any reason for the benefit of humans |
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What are the 2 philosophical divisions in abolishinist movement |
Utilitarian argument Rights argument |
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What is thr utilitarian argument |
Peter singer -follows the principle of equality -all creatures have the same stake to their existence |
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What is speciesism |
Elevating our interest above other species |
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What is the rights argument |
Regan and rollin -based of the principle of rights -inherent value (To have rights one has to have inherent value) (Animals do so they are entitled to fundamental rights) |
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What is inherent value |
Value an animal has in itself independent if any use that it may have for others |
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What do minimalists (reformers) believe |
That the use of non human animals in research may be permitted in a limited way - believe in the cost benefit analysis |
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What is the cost benefit analysis |
The benefits of the research to humans and non humans should outweigh the costs of using non human animals |
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What is the mind body problem |
How the body relates to brain activity |
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What is monism |
Idea that the universe consists of only 1 type of being |
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What is dualism |
Mind is one type of substance and matter is another |
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What structures are in animal cells |
Membrane Nucleus Mitochondria Ribosomes |
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What is the membrane |
Surface of the cell that seperates the inside of the cell from the outside environment |
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What is a nucleus |
Contains chromosomes |
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What is a mitochondrion |
Performs metabolic activities providing energy to the cell for activites (Different genes from the ones in the nucleus) |
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What are ribosomes |
Sites in the cell that synthesize new protein molecules |
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What is the smooth endoplasmic reticulum (er) |
Network of thin tubes that transport newly synthesized proteins to other locations -contributes ti segregation of protiens |
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What is rough endoplasmic reticulum (er) |
Contiams ribosomes |
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What is lysosmes |
Involved in the digestive process |
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What are microtubles |
Serve as a matrix or framework and transport molecules in the cell |
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What are golgi apparatus |
Form of smooth er made of membrains that are wrapped in products of sensory cells |
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What are 2 parts of the nervous system |
Central nervour system Peripheral nervous system |
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What cells is the nervous system made of |
Neurons Glai |
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What do neurons do |
Receive information and transmit it to other cells |
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What do glai do |
??? |
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What do all neurons have |
Soma Dendrities Axons Presynaptic terminals |
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What is a soma |
Body that contains the nucleus, ribosomes and mitochondria |
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What are dendrites |
Branching fibers that get smaller near the end -lined with synaptic receptors that receive information from other neurons |
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What is an axon |
Thin fiber of constant diameter that convey impulses towards other neurons and organs and muscles |
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What are presynaptic terminals |
At the end of axons. Act like a button |
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What is the myelin sheath |
Insulating material that covers the axon Has spaces called the nodes of Ranvier |
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What is an afferent axon |
Bring information into a stucture |
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What is an efferent axon |
Carries information away from a structure |
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What are multipolor neurons |
Single axon Many dendrites |
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What are bipolar neurons |
Has 2 extentions 1 axon and dendrites on each side |
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Unipolar neurons |
Has only 1 extension |
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What is a sensory neuron |
One end is highly sensitive to a particular type of stimulation (touch, light, sound) |
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What is a motor neuron |
Has it soma in the spinal cord Conducts impulses along its axon to a muscle |
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What is an interneuron |
A neuron that receives information from sensory neurons or interneurons and convey it to motor or interneurons |
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What are the different kinds of glai |
Astroglia Oligodendroglia Microglia Radial glia |
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What is Astrocytes |
Star shapes that wrap around the synapses of functionally related axons -shiled chemicals surrounding it -helps synchronize closely related neurons allowing axons to send messages in waves |
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What are Oligodendroglia |
Produce myelin sheaths that surround and insulate certain vertebrate axons in the central nevous system |
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What are microglia |
Act as part of the immune system removing viruses and fungi from the brain |
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What is radial glia |
Guide the migration of neurons and their axons and dendrites during embryonic development |
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What is the blood brain barrier |
Mechanism that excludes most chemicals from the vertebrate brain -cells are close together to block viruses -blocks out useful chemicals as well -glucose crossed in large amounts |
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What is active transport |
Protein mediated processed that expends engery to pump chemicals from the blood into the brain |
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When at rest what does the membrane maintain |
Electrical gradient (polarization) |
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What is polarization or electrical gradient |
The difference in electrical charge between the inside and outside of a cell -inside is more negative than outside -negative charged proteins in the cell |
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What is resting potential |
The difference in voltage in a cell and is the state of a neuron before it sends a nerve impulse -measued by a microelectrode |
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What happens in a membrane when it is at rest |
Sodium and potassium channels are closed -no flow of sodium -small flow of potassium |
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What is intracellular fluid |
??? |
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What is extacellular fluid |
??? |
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What factors are involved in resting potential |
-distrubution of substances -protiens -potassium -Chloride -sodium |
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2 things involved in resting potential |
Sodium potassium pump Membrain permeability |
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What is selective permeability |
Some chemicals pass through it more freely than others |
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What is sodium potassium pump |
Protien complex that transports 3 sodium ions out of a cell and draws in 2 potassium ions -is an active transport -more sodium on outside than inside -potassium is more concentrated in the inside than outside |
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What two factors push sodium into the cell |
Electrical gradient (opposite charges attract) Concentration gradient (difference in ion distribution) (more on outside so pushed inside) |
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What is action potential |
Messages sent by axons |
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What is hyperpolarization |
Increasing the polarization The difference between the electrical charge of 2 places |
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What is depolarization (hypopolarization) |
Reducing polarization towards 0 |
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What is threshold of excitation |
When reach threshold the membrane opens its sodium channels and let's sodium ions flow into the cell |
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What happens at the peek of action potential |
Soduim channels do not open in any situation deactivated |
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What is the refractory period |
Cell resists the production of future action potentials -depends on sodium channels closed and potassium flowing out fast |
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What is absolute refractory peoird |
First part when the membrane cant produce any action potential |
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What is relative refactory period |
Stronger than normal stimulus is needed for action potential -sodium channels are recovering |
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What is the all or none law |
Amplitude and velocity of action potential are independent of the intensity of the stimulus that caused it |
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What is an unmyelinated nueron |
-action potential propagation by being regenerated along each point of the axon |
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What is an myelinated neuron |
-Propagation happens ranvier of nodes (Creates resistance for electrical charge) (Conserves energy and fast) |
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What is propagation of action potential |
The transmission of action potential down an axon |
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What are local neurons |
Only give information to their neighbours -dont have axon so done follow all or none law |
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What is saltatory conduction |
Jumping of action potentials from node to node |