Psych Midterm 1 Flashcards
Is the scientific study of mental processes and behaviour
Psychology
Ideas seem reasonable
Idea is supported by easily recalled examples
People seek evidence towards the idea
Need for Psychology
Describe: what people do and their mental processes.
Predict: when are people likely most likely to behave or have certain mental processes.
Explain: why do people behave and have certain mental processes.
Control: To change, produce, or suppress behaviour or particular mental processes.
4 Goals of psychology
Metaphysics and Epistemology
Relevant branches of Philosophy
Study of reality. (Are the mind and body the same? Where do mental processes occur in the body?)
Metaphysics
Study of knowledge (Is knowledge mostly innate or is it gained from experience)
Epistemology
Psychology is __________, emphasizing observation and experimentation where possible
Empirical
This group argued that the brain is the organ of mental life.
Greek Hippocrates (460- 377 BC)
This person said “mind and body are the same”
Aristotle (384-322 BC)
This person said- Dualist: Proposed Mind and Body are distinct but interact.
Also proposed the reflex arc to explain behaviour
Rene Descartes (1593-1650)
Mind a blank State: all knowledge comes through the senses.
Tabula Rasa proposed by John Locke (1632 - 1704)(British Empiricists)
Nerves contain specific types of energy. “Specific nerve energies”
Johannes Muller (1801-1858)
Measured the speed of neural impulses. (Action Potential)
Herman Van Helmholtz (1821-1858)
Described mathematical relationships between physical stimulus and perception.
Gustav Fechner (1801-1887)
Pioneered field of psychology as a distinct scientific discipline
Wilhelm Wundt (1832-1920)
Where and when was the first psychology laboratory established?
1879 in Leipzig, Germany
This person studied in Cornell University in New York State.
E.B. Titchener
Structural elements of mind. became known as what?
Structuralism (school of thought in Psychology)
Self report method. Trained individuals would report elements of their sensory experience when exposed to a complex stimulus.
Introspection.
A school of thought that considers the purpose of mental processes. What is this called and who was it started by?
Functionalism started by William James (Harvard University)
This type of psychology began in Germany by Max Wertheimer and others
Gestalt Psychology
A school of thought that emphasized the unconscious mind.
Who was this developed by.
Psychoanalytical by Sigmund Freud in Vienna Austria
Until 1920 psychology was defined as the “_____”
Science of mental life
This person was influenced by Russian Physiologist, Ivan Pavlov. He studied at Columbia University.
John B Watson
School of thought that psychology should be an objective science that studies only observable behaviour without reference to mental processes
Behaviourism
From the 1920- 1960s psychology was re defined as the scientific study of ____
Observable Behaviour
This person was an operant psychologist who studied learned behaviour. Argued that behaviour is shaped by experience. He also elaborated on Thorndike’s (1874-1949) Law of effect.
B.F. Skinner
Emphasized the growth potential of healthy people;e and the importance of meeting our needs for love and acceptance.
Humanistic Psychology
The 60’s also gave rise to the cognitive revolution focusing on internal thought processes.
Cognitive Psychology
This person attempted to determine which areas of the brain is responsible for memory, learning and other functions
Karl Lashley (1890-1958)
Clinical and Counselling
Academic
Applied
Three main branches of psychology today
Involves making generalizations from specific observations
Inductive reasoning
Applies general principles to specific cases
Deductive reasoning
This model allows researchers to create and test theories of behaviour.
Hypothetico-deductive model
Are broad generalizations based on specific observations through inductive reasoning
Theories
Are then derived from theories by using deductive reasoning
Hypotheses
Science is only interested in theories from which testable hypothesis can be derived
Falsifiable
Are factors that may influence a Behaviour or mental state.
Variables
This research method is used to observe and describe behaviour.
Descriptive
This research method is used to demonstrate a cause an effect relationship between the variables.
Experimental
In this procedure neither the participant nor the researcher knows who is in which group.
Double blind procedure.
To determine if there is a relationship between the variables
Correlations
Statistics indicate if the hypothesis has been supported or if there is a meaningful difference between the groups.
Experimental research
A statistical measure of the correlation
Correlation Coefficient (r)
Used to organize and summarize sets of data
Descriptive statistics
Statistics that describe the most typical scores
Measures of central tendency
The most frequent occurring score
Mode
“The middle”
Median
The average
Mean
Is the difference between the highest and lowest score
Range
Are considered the ethics police.
Research Ethics Board (REB)
This process has a few limitations: Must wait until person expires and doesn’t imply causation.
Examining autopsy tissue
This test is used to test for dementia
Clock test
Uses scalp electrodes to record and amplify neuronal activity in the brain (Cortex)
EX: diagnosis of epilepsy, sleep disorders
Electroencephalogram (EEG)
Detects changes in electrical activity following presentation of a stimulus
used to diagnose sensory or information processing deficits. EX language defects
Event related potentials (ERP)
Provides picture of brain only (Not activity)
Structural imaging
Reveals areas of brain activity
Functional Imaging
Structural imaging
detailed x ray images from multiple angles
Computerized Axial Tomography (CT)
Uses strong magnetic fields and radio waves
Provides structural image of soft brain tissue
Magnetic Resonance imaging (MRI)
Detailed view of pathways in brain
Enables detection of brain injury EX stroke, concussion
Diffusion Tensor Imaging (DTI)
Functional Imaging
Records the consumption of radioactive glucose.
Clinical diagnosis of brain disorders (EX cancer, Parkinson’s)
Positron Emission Tomography (PET)
Functional Imaging monitors oxygen utilization in successive MRIs
Functional MRI (fMRI)
Localized tissue destruction or removal (Electrical, heat, chemical)
Lesion
Activation of specific regions of the brain.
Stimulation
Generate action potentials
Form synapses with other neurons
release neurotransmitters
Neurons
Support Neurons
Many functions
Do not generate action potential
Glial Cells
Creates blood- brain barrier, influences communication between neurons and helps heal brain damage.
Astrocytes
Cleans up dead cells and prevents infection in the brain
Microglia
Provides myelin to speed up transmission of neurons
Oligodendroglia
The basis of the nervous system is the
Neuron
From receptor to brain and spinal cord.
There is a few million of these in your body
Sensory Neurons
Send information from the brain and spinal cord to body
There are a few million of these in your Body
Motor Neurons
Connections between Neurons
There are billions of these in the world
Interneurons
Fibers which receive information from other cells.
Convey electric signals towards the cell body.
Dendrites
“Life support center” containing nucleus
sums electrical inputs from dendrites
Decides whether neutron will fire
Cell Body
Fiber that generates action potentials
Start at the cell body (one axon, but may split)
may be elinated
Axon
Electrical signal travelling down the axon
Neural Impulse
Covers the axon of some neurons and helps speed neural impulses
Myelin Sheath
A neuron at rest is actually negatively charged inside compared to outside. (-70 mV)
Polarized
Gets less negative on inside
Depolarized
If neuron reaches -55mV this is called the
Firing threshold
At +30mV Na+ channels open leading to ???
Repolarization
There are small gaps between myelinated segments called
Nodes of Ranvier
Brief time during which the neurons can’t fire is called the
Refractory period
During the refractory period the _________ is restoring the resting membrane potential by actively moving Na+ out and K+ ions back in the cell
Sodium Potassium Pump
Manufactured in cell and stored in vesicles. Released when the action potential reaches the end of an axon.
Neurotransmitters
Neurotransmitters bind to receptors on what neuron
Post Synaptic Neuron
Depolarize the post synaptic neuron and increase the likelihood of an action potential
Excitatory Postsynaptic Potentials (EPSP)
Hyperpolzarize the post synaptic neuron and decrease the likelihood of an action potential
Inhibitory Postsynaptic Potentials (IPSP)
Neurotransimitter is reabsorbed by the sending neuron a process called
Re- Uptake
Mimics action of neurotransmitter
Binds to receptor and produces similar effect
Agonist
Blocks action of neurotransmitters
Antagonist