Module 4 Flashcards
Phrenology
Studying bumps on the skull, invented by Franz Gall
Biological Psychologists
Use the biology of the mind combined with the psychological aspects
What is neuroplasticity
The changes that occur to the mind due to life
What are neurons
Nerve cells
What do dendrite fibers do?
Receive and integrate information
What do axon fibers do?
Passes messages through its terminal branch to other neurons/muscles
Dendrites ____, while axon ____
Dendrites listens while axon speaks
Dendrite vs axon length
Dendrites are short, axons can be long
What cells support nerve cells?
Glial cells (gluey cells)
What do glial cells do?
Support the billions of neurons
What do glial cells provide?
Myelin, guiding neural connections, and “chatting” to help memory and learning
Neurons transmit information when __
Stimulated by senses
Reaction time is measured in
MS, milliseconds
What is the primary charge in a resting axon’s fluid interior
Primarily negative, but includes large charged negative protein ions and small, positively charged potassium ions
What happens in a neural impulse?
A section of axon ions opens their gates, and then the next, etc.
What is depolarization?
The difference of loss in inside/outside charges during a neuron firing
What is Excitatory vs Inhibitory?
Excitatory is like pushing neurons accelerator, while inhibitory is like pushing the breaks
If ___ signals exceed the ___ signals by threshold, the combined signals will trigger action potential
Excitatory; inhibitory
Neurons act like binary, which means
They either fire or they don’t, it’s all or nothing
The chemical messengers released when a signal hits an axons end are called
Neurotransmitters
Excess neurotransmitters are
Drifted away and broken down by enzymes, if they are not, they are reabsorbed in a process called reuptake
What is reuptake
The process of excess neurotransmitters being reabsorbed