They've had 7 years to get up-to-date.
http://stroke.ahajournals.org/content/36/12/2665.full
The pertinent paragraph here:
Intervention
Patients comfortably sat in a quiet
room with their hands placed on a table. Temperatures of room and
subjects’ hands were
noted before experiment. Thermal agent was
made by general hot (≈75°C) or cold (0°C) pack wrapped with 2
towels, which buffered
the thermal conduction. The thermal agent was
placed over the region of the hand and wrist. A thermal couple was
placed in
between the hand and thermal agent to measure
the skin temperature. Changes of the skin temperature induced by
thermal agents
were nonlinear. In our pilot study (n=30),
uncomfortable signs to heating and cooling agents occurred at 10.1±1.0
seconds
(44.3±0.2°C) and 15.1±1.2 seconds
(18.8±0.3°C), respectively. To avoid tissue damage, ceiling durations of
heating and cooling
stimulation on the paretic hand were limited
by 15 seconds (48.8±0.3°C) and 30 seconds (14.0±0.2°C), respectively.
During
the development of uncomfortable sensation,
patients were encouraged to actively move their paretic hands away from
the stimuli
or generated a reflex. Thus, the thermal
agent could produce thermal sensation followed by voluntary/reflexive
behavior.
This is obviously very dangerous so no self-prescription or self-therapy without your doctors approval.
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