Which one of the following is and excitatory neurotransmitter?
GABA
Glutamate
Glycine
Phenylalanine - ANSWER Glutamate
An optimal repetition rate for BAEP's is?
4.47 Hz
31 Hz
56 Hz - ANSWER
Which one of the following is an inhibitory neurotransmitter?
GABA
Serotonin
Dopamine
Phenylalanine - ANSWER GABA
The nerve root entry levels for the Ulnar nerve are:
C1-C4
C5-T1
C5-C6
C8-T1 - ANSWER C8-T1
The nerve root entry levels for Posterior Tibial nerve are:
C5-T1
L1-L4
L4-S3
,S1-S5 - ANSWER L4-S3
The Tibial and Common Peroneal nerves form from what nerve?
Sural
Saphenous
Femoral
Sciatic - ANSWER Sciatic
Stimulation of the Median nerve at the wrist will activate which muscle?
Abductor digiti minimi
Abductor pollicis brevis
Biceps
Deltoid - ANSWER Abductor pollicis brevis
An EPSP will cause what to happen?
Depolarization of the post-synaptic membrane
Hyperpolarization of the post-synaptic membrane
Propagation of an action potential
Inhibition of all action potentials - ANSWER Depolarization of the post-synaptic
membrane
Which of the following drugs has an appreciable effect on peripheral nerve APs?
Sufentanil
Vecuronium
Desflurane
None of the above - ANSWER None of the above
Which of the following statements is true?
, Anesthesia tends to affect one side more than the other
All cortical responses are affected equally
Later cortical peaks are affected more than earlier peaks
Motor pathways are unaffected by anesthesia - ANSWER Later cortical peaks are
affected more than earlier peaks
Which of the following peaks will be most affected by Desflurane?
P37
P100
N20
Wave V - ANSWER P100
Fentanyl infusion will:
Have no affect on amplitude or latency
Decrease amplitude only
Increase amplitude and increase latency
Increase latency and decrease amplitude - ANSWER Have little affect.
Bolus will Increase latency and decrease amplitude
If a sound intensity is increased from 20 dB to 40 dB then the sound pressure has
increased by a factor of:
20
2
10
100 - ANSWER 10
ABR condensation clicks from the transducer causes: