This includes but is not limited to: Vicon Switch on power strip located on wire rack Should be turned on before software is opened EMG Delsys.

VICON NEXUS

General Outline1. T u r n o n H a r d w a r e2. O p e n i n g S o ft w a r e3. C a m e r a C a l i b r a ti o n4. S e t V o l u m e O r i g i n5. V i c o n P r e p6. S u b j e c t S e t - U p

P a r t 1 : E l a s ti c S t r a p s P a r t 2 : E x t r e m i t y M a r k e r s P a r t 3 : S p i n e M a r k e r s P a r t 4 : O t h e r M a r k e r s P a r t 5 : J o i n t M a r k e r s P a r t 6 : E M G S e t - U p & M o r e

7. V i c o n S e t - U p C r e a t e s u b j e c t fi l e / s e s s i o n L o a d s u b j e c t C h e c k A n a l o g S i g n a l s i n V i c o n C o l l e c t s t a ti c t r i a l R e - c o n s t r u c t fi l e L a b e l M a r k e r s S a v e R e m o v e j o i n t m a r k e r s f o r s u b s e q u e n t t r i a l s

8 . D a t a C o l l e c ti o n

Step One: Turn on HardwareThis includes but is not limited to:

Vicon Switch on power strip located on wire rack Should be turned on before software is opened

EMG Delsys Trigno

Is switched on when power strip turned on

Force Plates 2 small boxes labeled Bertec Green lights indicate on Push the button on the right side of each Bertec box to execute a hardware re-zero

Step Two: Opening Software Once Vicon Hardware is powered on, open Vicon Software found on

desktop Change all view types to RELIEF (highlighted in yellow)

Step Three: Camera Calibration Calibration is most effective with two people On right of screen, select the System Preparation under Tools

Choose 5-marker wand and L-Frame under the 2 pull down menus Have one person stand by area of force plates with the calibration wand The other person should hit start under Calibrate Cameras subheading.

Calibration Type should read Full Calibration After “start” is clicked, the person with the wand should move the wand around the entire volume

making sure to turn around so that all cameras can view the wand. As a camera is completed, it will turn green. Process ends when all cameras are green in Vicon. Once this is complete, wait for the system to finish calibration (System Preparation)

(System)

These values should be below 0.16. If not, redo the calibration before saving.

Step Four: Set Volume Origin

Grab the T-wand and place it on the upper right corner of Plate #1 (plate on right when looking at them from the captains deck)

Click Start under the Set Volume Origin subheading as seen on left, and then hit Set Origin

2. Check Camera Views:

Hide all reflective markers, including the wand used in camera calibration WindowNew Floating Workspace (Picture one), results in picture two Under the 3D Perspective tab on top left, select “Camera” (Shown in picture two) Select the cameras (one at a time or hold Control key to select all cameras)

To do this, expand the Cameras sub-heading under the “System” tab as shown in picture three. Picture four shows results of selecting all seven cameras

If there are white dots in camera field boxes, this indicates the presence of reflective markers or objects that reflective components that the cameras are picking up. Move markers and/or reflective objects out of camera viewing area.

(Picture One) (Picture Two)(Picture Three)

(Picture Four)

Step Five: Vicon Prep

Step Six: Subject Set-Up

P a r t 1 : E l a s ti c S t r a p s

P a r t 2 : E x t r e m i t y M a r k e r s

P a r t 3 : S p i n e M a r k e r s

P a r t 4 : O t h e r M a r k e r s

P a r t 5 : J o i n t M a r k e r s

P a r t 6 : E M G S e t - U p

Part 1: Elasti c StrapsGeneral Information Fabrifoam straps are arranged on wall by body region and by size in subject set-up area The straps are used to secure extremity marker plates Wrap straps tightly around body segments to prevent them from sliding down during the

data collection process

Upper Extremity Left and Right mid-humerus Left and Right mid-forearm

Lower Extremity Left and Right mid-thigh Left and Right mid-shank

Sacrum Use black belt and secure it below the PSIS and ASIS

Anterior View

Part 2: Extremity Markers

Part 3: Spine Markers

LFing

Rfing

Rfootlat

RfootmedRtoe

HeadRFront

HeadLBackHeadRBack

Use surgical cap and place head cluster on top

4 markers on it. Above is atop view of hat markers.

Part 4: Other Markers

Apply finger markers to left and right index fingers as seen in picture on left.

Use white sneakers for subjects’ feet. There are plates labeled right and

left toe to use

HeadLFront

Part 5: Joint Line Markers

Use double-sided tape to attach reflective markers to the following:

Upper Extremity: Left and Right, anterior and posterior GH (Shoulder) Left and Right, medial and lateral humeral

epicondyles (Elbow) Left and Right, radial and ulnar styloid processes

(Wrist) C7 vertebrae (not shown) Offset to the left of the lumbar cluster at level of

T12/L1 (not shown)

Lower Extremity: Left and Right Greater Trochanters (Hip) Left and Right, medial and lateral femoral condyles

(Knee) Left and Right, medial and lateral malleoli (Ankle)

Part 6: EMG Set-Up & More Follow EMG Set-Up as outlined in EMG section of Lab

Manual.

The RELIEF trial uses sensors: 1: ERS_R 2: EXO_R 3:RAB_R 4: INO_R 5:ERS_L 6:EXO_L 7:RAB_L 8: INO_L 13: DEL_R 14: DEL_L

Once all sensors are placed, turn them on. Open the Trigno utility from the toolbar, click Start.

All sensors should show that they are paired indicated by the green light and the “paired” icon by each sensor.

Create the subject and session: File data management Highlight appropriate study by double clicking it Click New Patient as represented by the yellow marker

Type in the subject base file name Click on the gray marker at the top of the screen labeled New Session

Under this heading type the base file name followed by S1 Repeat this process three more times, labeling the base file with S2, S3, S4

Load Subject: In the left column on main screen, select the “subjects” tab (as compared to systems) Select the button Create a Blank Subject Enter the base file name of the subject Right Click, select, Attach Model Select, RELIEF (06-03-13)

(Subject’s Tab)

(Shortcut for data management)

Step Seven: Vicon Set-Up

Check All Analog Signals:

Make sure all sensors are paired by opening up the Trigno utility Under the 3D perspective pull down menu, select “Graph” (picture one) Under the system tab on left, select various EMG channels, load cells, fork sensors, etc. to make

sure all equipment is working (picture two) Apply manual force to subject to check activity of EMG channels Picture three shows sampling of an EMG channel in the graph workspace

(Picture One) (Picture Two) (Picture Three)

Collect Static Trial & Re-construct

Have the subject step into the space Make sure you are in Live mode Under the Tools, select Capture (directors clapboard)

Have the subject assume the T-pose Instruct subject to look straight ahead, and flex shoulders to 80 degrees with thumbs pointing

up Make sure all sensors are visible, readjust sensors on the subject if they are not Instruct subject to not move Click Start and collect ~400 frames

Under the Subject Capture subheading, click start to record data, click stop after about 1-2 seconds of collection.

Open the Data Management window and double click on the previously captured trial Click on the Gray Markers at the top of the screen under File, Edit, Window, Help

Labeling Markers:

On the right side of the main screen, select “Label/Edit” button. It looks like a tag. Click on first marker name from list on right (PelLtSup) Click on corresponding marker Use previously labeled pictures to help correctly label markers Vicon will cue you as to which marker you should label next, so you don’t have to click on the list on the right

again If you label a marker wrong, click Control-Z for edit undo function. Do that until you get rid of all mistakes. After all markers are assigned, press the Escape button on the keyboard which will allow Vicon to connect the

markers When finished, click on save shortcut button Remove all joint markers in the extremities for subsequent trials

Helpful Reminders:

Joint marker names are based on anatomical position During calibration trial, subject has shoulders flexed to 80 degrees with thumbs up Shoulder back is more posterior Shoulder front is more anterior Elbow lat is higher Elbow mid is lower Wrist Rad is higher Wrist ulna is lower

Picture above shows all markers used for calibration trial. Blue

markers are the joint markers that are removed after calibration. Includes bilateral wrist, elbow, shoulder, hip, knee, and ankle

markers.

Picture above shows all markers used all subsequent trials. Notice how joint markers have been removed. This is

accomplished by simply physically removing joint markers off subject after calibration trial completed.

Data Collection:

On the right side of the main screen, select the “capture” button. It looks like a director’s board.

Vicon must be in Live Don’t start collecting data until model is attached. If the

model is not attaching, have the subject assume the T-pose as used in the static calibration.

Under the Auto Capture Setup subheading; select “Arm” to arm the trigger

You can now use the handheld trigger to collect data. Data collection duration and other specific settings may vary

depending on specific protocol.

(Arm)

(Capture)

Step Eight: Data Collection