lecture 2 - foundations Flashcards
how do neurons communicate?
they receive info at the dendrites and send it down to the axon which communicates with dendrites of other neurons to send info
what is an axon?
sends outgoing signals
what is a dendrite?
sends incoming signals
what does nerve nets allow for?
continuous and nonstop communication through the network
what does the neuron doctrine contradict?
nerve nets - not continuous but made up of individual cells which from together to form neural circuits
what are neurons called that receive info from outside (senses)?
receptors
when a nerve is at rest is there a negative or positive charge inside compared to outside the axon (resting potential)?
negative
how do neurons communicate with each other?
nerve impulse passes the electrode and becomes more positive and the charge becomes more negative until it eventually returns to its resting state. When the action potential reaches the end of the axon, synaptic vesicles open and release neurotransmitters
regarding action potential, what does low-intensity stimulus mean?
slow firing
regarding action potential, what does high-intensity stimulus mean?
fast firing
what is a synapse?
space between axon of one neuron and dendrite or cell body of another
what are the function of the frontal lobe?
motor control, action knowledge, ‘muscle memory’, abstract thinking and problem solving, focus and attention
what are the functions of the parietal lobe?
sensory cortex - attention, imagination & creativity, knowledge and integration
what are the functions of the occipital lobe?
visual cortex - visual perception
what are the functions of the temporal lobe?
memory, language (auditory perception), hearing
