Instructions and Tips for Viewing the Neurophysiologic Synchrony Movie.

(1.) Push the play button.

(2.) To slow down, decrease the speed control slider.

(3.) To examine team engagement at any point in time, pause the simulation and click on an island.

(4.) Drag the slider over the Entropy bar to manually scroll the window.

(5.) To learn more, read the briefing story.

Tips! It is probably best to drag the Frames per Minute (fps) scroll bar to the left so that the movie does not go too fast. When the entropy drops, it is probably a good time to pause the movie and then click in the center of one or more of the clusters. A few good places are around epoch 790 where there is a dip in entropy…..here the dominant transitions are around pattern 24-25 (an engaged team) whereas around 2000-2100 they are patterns 10-11 (a less engaged team). So decreased entropy alone is not necessarily bad….it depends on what is causing the drop. For now we safely say that an entropy drop detects events of significance to the team.

 

Linking NS Engagement Expression with Team Communication.

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The speech frequency by SPAN team members were binned into 100 second segments along with the NS_E expression. From this data, a summary of the teams' performance and dynamics has been created with the Event numbers related to the data pane shown above. Please click on an event tab for details.

  • Event 1

  • Event 2

  • Event 3

  • Events 4 and 5

  • Event 6

  • Event 7

  • Event 8

During the first part of Event 1, the team is quiet; with, speech restricted to taking Rounds. The drop in Speaker entropy (indicating fewer persons speaking) and in NS_E entropy (indicating fewer NS_E Patterns being expressed). Epoch 780 is closely linked to the decision to overtake the tug in the Race. The Lieutenant’s comments are included in the chart below in light of the teams’ reaction.

Event Epoch Stress Summary

1

0-700

The team is quiet and focused.

The Briefing is conducted and there are discussions about weather and contacts in the area. The team conducts a static fix and the simulation begins with a Round and proposed course change.

1

750-1049

Slight stress particularly to NAV and OOD.

Discussion of a potentially close Closest Point of Approach (CPA). and future problems to deal with; failure of Virtual Mapper (VM2) and all contacts lost.

Event1

The situation becomes more stressful during Event 2 as the tug is passed, an additional contact of concern is detected and the GPS is lost (it had been slowly failing over the prior 2 minutes but the crew did not notice it). Sequences in Rounds being taking are beginning to be missed. The trough in NS_E entropy at the end of Event 2 (Epoch 1380) is associated with the detection of the loss of GPS. The Lieutenant’s comments are included in the chart below in light of the teams’ reaction.

Event Epoch Stress Summary

2

1050-1300

Stress elevating to moderate

More contact discussion; planning entrance to the Race (a narrow and diffIcult channel); this is always difficult and a relief once through. Speed up to All Ahead Full and there is a crossing situation with a tug, a Round is marked and a crew members states: "we're going to get around this guy, right?"

2

1300-1400

Heavy stress situation with multiple contacts.

Contact B is detected. This is additional stress to CC while managing current contacts, and then the military GPS is lost

Event2

The NS_E entropy drops slightly at the beginning of Event 3 as the Closest Point of Approach (CPA) to the Double Eagle is projected as zero. Radio contact is established with the Double Eagle and the situation begins to improve.The Lieutenant’s comments are included in the chart below in light of the teams’ reaction.

Event

Epoch

Stress

Summary

3

1700-1750

Very stressful, little to no recommendations from team to OOD.

Slowing in the race to allow Double Eagle to pass ahead, future CPA to Double Eagle is zero!

3

1750-1850

Relief in stress

OOD arranges passing arrangements with Double Eagle; team refocuses on safe plan

Event 3

During Events 4 and 5 there is a large drop in NS_E entropy and more frequent and diverse speech (indicated by the increased Speaker entropy), particularly by the OOD as communication between CC and OOD breaks down. Team performance drops as Rounds sequences are dropped / repeated. There is a close encounter with another contact while changing course which becomes resolved by radio contact. The Lieutenant’s comments are included in the chart below in light of the teams’ reaction.

Event

Epoch

Stress

Summary

4

1925-2050

Moderate stress

Confusion on contact picture; moderate stress while in the Race

5

2065-2230

Moderate stress

Preparing for turning out of the race; projected close CPA to event B, CC info to ODD breaking down

5

2245-2350

Very stressful, loud and busy team

Tuming out of race; close CPA to contact B. 100yds!

Event 4&5

The period during Event 6 is characterized by more consistent Rounds sequences, higher NS_E entropy and a slow decrease in Speaker entropy; distance to Contact B is increasing. The Lieutenant’s comments are included in the chart below in light of the teams’ reaction.

Event

Epoch

Stress

Summary

6

2365-2530

Stress reduces

Past CPA and opening from event B; stress reduces, team refocuses, find the next problem

Event 6

This is followed by the entering of the submarine into a group of fishing boats which is again associated with a drop in NS_E entropy (Event 7). The Lieutenant’s comments are included in the chart below in light of the teams’ reaction.

Event

Epoch

Stress

Summary

7 2541-2830
Severe stress and confusion
Trawler field is starting up to the SE; increased stress, team is passing info and trying to get on the same page. Trawlers have fishing gear out uncertainty about changing course or speed; still in reduced visibility.

Event 7

Event 8 is a 7 minute segment begun with a man overboard event; both Speaker and NS_E entropies are unaffected. A Rounds sequence that was initiated was cancelled as the ship began to maneuver towards the man; Rounds are resumed shortly. The Lieutenant’s comments are included in the chart below in light of the teams’ reaction.

Event

Epoch

Stress

Summary

8

2845-3358

 

M an overboard (Epoch 2847). "Believe it or not. I think a man overboard drops the stress level and focuses the team. Here is why: prior to the man overboard, the team was focused on a very dynamic problem of navigating through multiple moving trawlers in reduced vis. Once the man falls overboard, the team is relieved of that dynamic problem and can focus on this one problem for which they have structured responses and have practiced many times. Not to mention, every student knows that a man overboard comes at the end of a SPAN scenario, so they know the problem is about to be in freeze and they can relax a soon as they recover the man" (direct quote of the Lieutenant).

Event 8

 

These studies were conducted with navigation training tasks that are integral components of the Submarine Officer Advanced Course at the US Navy Submarine School, Groton, CT. The task is a high fidelity Submarine Piloting and Navigation (SPAN) simulation that contains dynamically programmed situation events which are crafted to serve as the foundation of the adaptive team training. Please click on the tabs to view the NS movie. 

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