Backbone
What impulses pass through the dorsal root
all incoming sensory impulses to the spinal cord
What does the central sulcus seperate
Motor and sensory cortex
Central Conduction Time for MN is calculated between which peaks?
N14 and N20
Sacral Plexus
L4-S4
What would you see in SSEPs is CZ and FPZ were plugged in backwards
Cortical and subcortical channels would look identical
Spondylolisthesis
A forward movement (anterior slippage) of a lumbar vertebra one level below
Broca's Area
Speech production
What's the normal resting membrane potential for a typical neuron
-70mV
Stimulation of the Trigeminal Nerve (CN V) produces a muscle response from
Masseter
Sudden loss of all of your right MN responses
stimulating electrodes pulled off
During a lumbar TLIF/PSF what will most likely result on PTN SSEP changes
Retraction on the cauda equina
Where is CSF produced
Choroid Plexus
SSEPs are not recordable when cerebral fusion drops below
15cc/min/100
The areas of the skin supplied by cutaneous branches of the spinal nerves are known as
Dermatomes
Ohm's Law
V=IR
V-voltage
I-Current
R- resistance
Posterior wall of bone that covers and protects the spinal cord
Lamina
CN that controls lateral eye movement
Abducens
A potential with a synchronized polarity as stimulus in BAERs
Microphonetics/summating potentials
Inhibitory Neurotransmitter
GABA
CMRR
10,000:1/ 80dB
Contrel-Dubousset instrumentation
two rods, laminar hooks, wires, and pedicle screws
What is the very large amplitude potential following the ABR waves I-V at approximately 15mS?
Postauricular myogenic response
Intracranial stimulation of the Facial Nerve (CN VII) produces a muscle response at a latency of approximately
7 ms
The Cochlea is separated into three fluid filled compartments by which 2 membranes
Basiler and Reissner Membranes
Nyquist Theory
More than twice the highest frequency component of the signal