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0. -.5. +.5. -1.0. +1.0. Low . High. The Arousal Meter. presented by Dr. Adam Hoover. 0. -.5. +.5. -1.0. +1.0. Low . High. Outline of presentation. What is arousal? How does the arousal meter work? Out on a limb - close the loop Current and ongoing efforts. What is arousal?.

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the arousal meter

0

-.5

+.5

-1.0

+1.0

Low

High

The Arousal Meter

presented by Dr. Adam Hoover

outline of presentation

0

-.5

+.5

-1.0

+1.0

Low

High

Outline of presentation

What is arousal?

How does the arousal meter work?

Out on a limb - close the loop

Current and ongoing efforts

what is arousal
What is arousal?

Performance

Arousal Level

  • Yerkes & Dodson (1908)
  • easy vs. difficult tasks
  • affects “sustained attention” and short term memory
how does it work

0

-.5

+.5

-1.0

+1.0

Low

High

How does it work?

Display

Monitor

Analyze

close the loop

0

-.5

+.5

Feedback

-1.0

+1.0

Low

High

Close the loop

Display

Monitor

Analyze

out on a limb
Out on a limb...

Are we actually

measuring arousal?

measuring arousal
Measuring arousal
  • Sympathetic nervous system - “fight or flight”
    • (epinephrine and catecholamine)
  • Parasympathetic nervous system - return to rest
    • (norepinephrine and acetocholine)
  • Respiratory sinus arrhythmia - indicator of PNS activity
  • Autonomic, electrocortical, and behavioral arousal
out on a limb8
Out on a limb...

Are we actually

measuring arousal?

Yes, at least partially.

out on a limb9
Out on a limb...

Is physiological arousal correlated to cognitive workload?

is physiological arousal related to cognitive workload
Is physiological arousal related to cognitive workload?

Rest

vs.

Hand grip

Physiological tasks

Cognitive tasks

(three levels of difficulty)

out on a limb13
Out on a limb...

Is physiological arousal related to cognitive workload?

Based on pilot study, yes.

(More data needed.)

out on a limb14
Out on a limb...

How should arousal drive the feedback loop?

home brewed system
Home-brewed system

Manipulate game operation based upon arousal

out on a limb16
Out on a limb...

How should arousal drive the feedback loop?

Try and see.

closed loop study
Closed-loop study

Assistance off - person pushes button to recharge

Assistance on - computer recharges when <= 50%

Manual - person turns assistance on/off when desired

Automatic - arousal level turns assistance on/off

Yoked - on/off tied to arousal of previous subject

60 subjects, balanced by gaming experience and gender

performance vs control
Performance vs. control

Deeper analysis in progress

what are we doing now

0

-.5

+.5

-1.0

+1.0

Low

High

What are we doing now?

Measurement - additional physiological measures

Analysis - wavelets

Hardware - wearable arousal meter

Cognitive correlation - sleep study

Closed loop performance - rebalance, try again