2
1. At about the same time (i.e., within 10 s or so),
1. Turn the Moog computer power switch off
2. Turn the Moog high power off
Then, shortly thereafter,
2. Turn the battery power switch to off
Chair Tilt Procedures
1. Upright, yaw rotations
a. Lock slide clamps. Remove bolts B and C. Rotate as desired, replace relevant bolts
(depends on direction).
i. Currently, the chair can be locked in yaw rotation at 45 or 90 degrees in the
direction of facing the Markham room, or 45 degrees facing the opposite wall.
b. Upright, seat lift mechanism: The hand crank on the back of the chair moves the seat
up or down with respect to the frame that the chair sits on. The helmet is on the
frame and therefore stays fixed.
i. Turn the crank counterclockwise to raise the seat (bringing the subject’s head
higher toward the helmet) or clockwise to lower the seat (lower the subject’s
head with respect to the helmet).
2. 90 degree tilt (from upright, to supine)
a. If alone, follow procedure for removing subject from the chair. Once empty, move
chair to the middle of the sliding rails. Lock slide clamps. Remove both T-handle
hitch pins (requires lifting the foot end of the chair slightly to relieve pressure on the
pins).
i. Pull frame from the crossbar that supports the helmet. Shortly after the chair
begins to move, prepare to “catch” it as gravity will soon be pushing it into the
supine position. Rest it gently in supine and replace both hitch pins.
Reposition chair on sliders if needed.
b. With two people, it’s still recommended that you remove the subject from the chair.
Once empty, move chair to the middle of the sliding rails. Lock slide clamps.
Remove both T-handle hitch pins (requires lifting the foot end of the chair slightly to
relieve pressure on the pins).
i. Position one lab member on each side of the chair (left/right), both with one
hand on the foot rest and the other on the helmet posts. Begin tilting toward
supine. Shortly after the chair begins to move, prepare to “catch” it as gravity
will soon be pushing it into the supine position. Rest it gently in supine and
replace both hitch pins. Reposition chair on sliders if needed.
3. Yaw rotations while tilted
a. Lock slide clamps. Remove bolts B and C. Rotate as desired, replace relevant bolts
(depends on direction). Compared to upright, there is slightly more resistance to yaw
rotation when the chair is in supine. (Make sure two lab members are present to
rotate smoothly!)
i. Currently, the chair can be locked in yaw rotation at 45 or 90 degrees right-
ear-down, or 45 degrees left-ear-down.
4. 90 degree tilt (from supine, to upright)
a. If alone, follow procedure for removing subject from the chair. Once empty, move
chair to the middle of the sliding rails. Lock slide clamps. Remove both T-handle
hitch pins (requires lifting the head end of the chair slightly to relieve pressure on the
pins). Lift frame from the crossbar that supports the helmet.