1 Flashcards
(18 cards)
Neuro system is every where but where?
cartilage
The visual system, auditory system, and olfactory system are examples of what type of sensory information?
remote (vs. proximate which actually come in to contact with and internal)
Proprioceptive, viscerosensory and vestibular system are examples of what type of sensory information?
internal
3 types of sensory information?
remote, proximate, and internal
What does the CNS do to sensory info?
Applies rules and assumptions
What characteristic of the CNS is defined by progressive refinement of sensory information as it is being transmitted through diff. structures?
multi-level (hierarchical structure
Where does most adaption occur in regards to the CNS?
synapse–new synaptic contacts (axon/dendrite growth), better synaptic efficiency (chemical), very occasional generation of new cells, and maintenance
What are the two basic cell types of the CNS
neuron and glia
3 main classes of neuron
- multipolar (most common),
- bipolar (always sensory functions-special),
- pseudo-unipolar (both have structure and function of axon)
The most numerous type of cell in the CNS?
glia (90%)–support function and insulation function
Pieces of Neuron Doctrine Theory (from waldeyer)
- everything defined by electrochemical activity
- Stand alone process
- Transfer info via cell processes
- Synapses
- excite or inhibit
The specialization of the CNS is largely established by what?
modularity– composed of interconnected modules each evolving on its own = adaption is faster
Is the cerebral cortex or the cerebellum more homogenous?
cerebral cortex
What type of network does the CNS use to maximize function?
small-world- (regular cannot adapt and random is inefficient)
What neurons are thought to allow very rapid transfer of information between distant networks?
Von Economo Spindle neurons in layer V of cortex
Do all neurons carry sensory or motor information?
no, some are there just to alter the information being transferred in one way or another
Where is it believed that memory and learning is stored?
neural networks- spatially
Where are CNS higher functions thought to come from?
neural networks- implies that the mind is an emergent property of the brain and separation between the two is false
