https://www.synapse.org/#!Synapse:syn8717496/wiki/448356
**1. drnkg (drinking from a glass of water): ** is this the same as ... opening a bottle and pouring water (three times)
drinking/pouring are not obviously the same thing to me.
**2. alternating hand movement ("raml1","raml2","ramr1","ramr2")** ... does r refer to right, l to left and 1- and 2- to the first / second try? What exactly is this exercise ... is it active finger to nose, where finger to nose is a 15 second hold?
Please clarify.
Created by Monte Shaffer MonteShaffer The instructions regarding the experiment stated that the pebble/geneactive are attached to the each wrist, eneactive most affected. Then the participant performs tasks. The experiment states that the orientation of the watches are clearly defined.
Certainly the participant is moving, but is the watch not firmly fastened to the wrist so it will not "re-orient"?
The above, IMO, shouldn't be a tremendous assumption (e.g., watches are fixed to wrist).
#Did the protocol, at the beginning of the visit verify the initial orientation?# Or was it possible that a wristwatch was worn upside down?
Yes, from the activity, I can figure out much of this. It is just useful to understand the units, and nature of the protocol. Hi @MonteShaffer
**What are the units for the L-dopa accelerometer data? Is it in gs or micro-gs?** Meter per second squared
**Has gravity been removed?** No
**is the orientation of each device the same?** Yes. However, for the data you shared the example itself it's not explicative, because during the execution of a task that involves both upper limbs a subject is free to move and orient his/her arms in whichever direction he/she wants. Could you be more specific about which task are you investigating? In general we suggest to check orientation during a longer window of time, given that few samples are not representative.
@pbonato can you or someone from your team comment on the units, gravity and orientation of these devices?
```
timestamp GENEActiv_X GENEActiv_Y GENEActiv_Z GENEActiv_Magnitude
1430741058.38 -8.29937 -4.66012 -2.84197 9.93343
1430741058.4 -7.905139999999999 -4.42574 -2.53208 9.4069
1430741058.42 -8.3788 -4.738569999999999 -2.60955 9.97337
```
```
timestamp Pebble_X Pebble_Y Pebble_Z Pebble_Magnitude
1430740690.38 2.6425099999999997 9.70465 1.7255 10.20492
1430740690.4 2.53824 9.8616 1.9093200000000001 10.36047
1430740690.42 2.48449 9.99275 1.962 10.48223
1430740690.44 2.56403 10.019639999999999 1.962 10.52696
```
#What are the units for the L-dopa accelerometer data? Is it in gs or micro-gs?
Pebble Info
https://developer.pebble.com/guides/events-and-services/accelerometer/
GENEActiv Info
https://www.activinsights.com/resources-support/geneactiv/downloads-software/
#Has gravity been removed?
# is the orientation of each device the same?
You can find the link to the recording on the [News and Updates page](https://www.synapse.org/#!Synapse:syn8717496/wiki/448336). There was no video of the tasks during the webinar. I attended the webinar and have reviewed the slides in files (https://www.synapse.org/#!Synapse:syn10656772).
Is there a link to the webinar recording?
@jdaneault - is there a video demonstration of the alternative hand motion task?
I don't recall if you showed a person performing the task. I want to use some of the known hand movements to synchronize the two wearables in space. During the webinar, drnkg was explained to be opening a bottle of water, pouring into a glass and put the cap back on. Alternating hand movements was explained to be alternating palm up/palm down, which is not the same as finger to nose. The description of the tasks occurs about minute 25:30 of the webinar recording, but if you have any other clarifying questions, I'm sure @jdaneault can answer them.