MECHANICAL   VIBRATION   IN   DIAGNOSIS  143

In  the  study  of  segmental  analgesia  it  lias  been
found*  that:

"1.  Concussion  and  sinusoidalization  stimulate
the  motor  component  of  a  spinal  segment  and  subdue
its  sensory  constituent.
''2.  The  sensory  component  of  a  normal  spine  seg-
ment is  less  amenable  to  concussion,  sinusoidaliza-
tion and  freezing  than  a  hyperesthetic  segment."

Abrams  also  noted  the  association  of  definite  spinal
segmentst  associated  with  visceral  sensation.
In  his  study  of  the  reflexes  he  found  that  the
physiological  location  of  viscero-motor  cells  did  not
correspond  with  the  clinical  localization  of  the  vis-
cero-motor reflexes  but,  to  make  the  work  more  com-
plete, the  following  table  is  appended.
' '  The  viscero-motor  cells  control  involuntary  mus-
cles aside  from  those  of  the  vascular  walls.  "$

Table  of  Viscero-Motou  Neurons

In    nucleus     of     the     3rd    cranial


Cause  constriction  of  pupil.
nerve.
Probably  there  is  a  dilator  type
for  bronchi  and  bronchioles.
^.,   ,  ,,      ,  .,  Chiefly   between   the    6th    cervical

Dilator  cells   for   pupil.  y       ,    ,   ,  r.    .    j         i

)  and   1st  or  2nd  dorsal.
Viscero-motor  of  constrictor  type    )      _  ,  ^  2-,      -.r^n  •  i

,.  ,  "^^      V      In   nucleus   of  the   10th   cranial,

for  bronchi   and  bronchioles.  )

Between  the  3rd  and  7th  dorsal
segments,  xirnold  states  that  proper
manipulation  of  these  segments  will
relax  bronchial   spasm.
^  ,  .,  .  ■,      „      ,  "1       In    nuclei    of    the    10th    and    11th

Inhibitory  neural  cells  of  neurons  .   ,  i  i    .i    •         xi

,        .  >■  cranial  nerves  and  send  their  paths

^^      ^^    '  J  tQ  ii^Q  heart  through  the  10th  nerve.
Accelerating  set   of   neurons   for    1      Chiefly  from  the  6th  cervical  to  the
heart.  \  1st  or  2nd  dorsal  segments.
*  Abrams.     Spondylotherapy,  page  367.
