Ch 7 Flashcards
Neuroplasticity
Ability of neurons to change func (learning, creating new memories)
T/F: habituation is the simplest form of neuroplasticity and is a decreased response to repeated, benign stimulus
T
CIMT
Constraint-induced movement therapy
T/F: CIMT involves restricting use of more-involved UE while forcing use of less-involved UE
F: less-involved, more-involved
2 types of experience-dependent plasticity associated with learning and memory are:
Long-term potentiation (LTP)
Long-term depression (LTD)
T/: LTP = conversion of silent to active synapse
T (PSA)
For LTD to occur, what happens to the active synapse?
They lose AMPA receptors to become silent synapse (DAS)
When cell body is severed (in PNS/CNS), cell body is called
Proximal segment
Wallerian degeneration
When distal segment of axon degenerates, myelin sheath pulls away from that segment
(axon swells and divides into smaller pieces)
Regenerative sprouting is the
Regrowth of damaged axon
Collateral sprouting is
When a presynaptic neuron is damaged, so target is innervated by intact neuron
T/F: sprouting occurs in CNS
F: PNS
CNS changes following injury
Local edema
Denervation hypersensitivity
Synaptic hypereffectiveness
Unmasking
___ occurs when presynaptic axon terminals are destroyed and new receptor sites develop on the postsynaptic membrane bc red NT
Denervation hypersensitivity
___ occurs when only some branches of presynaptic axon are destroyed
Synaptic hypereffectiveness
