estim and pain Flashcards
Whats TENS voltage, carrying frequency and intensity
all low
Whats IFC voltage, carrying frequency and intensity
low
medium
medium
Whats HVPC voltage, carrying frequency and intensity
high
low
high peak but low average
is HVPC biphasic
no, monophasic
Physiological rationale for EPA’s
segmental mechanisms
extrasegmental mechanisms
Placebo
segmental mechanisms
ascending
GATING
gating
the gate control theory
inhibition of T cells by activating AB, Adelta or c fibres
hows gating best achieved
high frequency, low intensity
TENS
weaknesses of segmental mechanisms
doesn’t account for pain in small diameter nerve fibres being destroyed
doesn’t consider role of higher centres in pain perception
extrasegmental mechanisms
descending
Stim of A-delta may provoke impulses at midbrain down SC to inhibit nociceptors
A delta sim releases ____ to inhibit _____ activity similar to _____
enkephalins
C fibers
morphine like
motor level of stem releases ____
dynorphins
extra segmental effects best evoked by
low frequency
high intensity
(AL TENS)
over motor points with intensity /pulse duration enough for mm twitch
TENS activates __ and ___ receptors
opioid
serotonin
does high or low frequency TENS impact serotonin
no , low is just as good as high