EDA Quick View A new interface for visualizing arousal Elena - - PowerPoint PPT Presentation

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EDA Quick View A new interface for visualizing arousal Elena - - PowerPoint PPT Presentation

Feb 08, 2023 442 likes •1.01k views

EDA Quick View A new interface for visualizing arousal Elena Agapie & Caroline Pires The Problem How to make live arousal data more accessible? Make EDA data intuitive to non- scientists Real time arousal monitoring

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EDA Quick View

A new interface for visualizing arousal

Elena Agapie & Caroline Pires

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The Problem

  • How to make live arousal data more

accessible?

  • Make EDA data intuitive to non-

scientists

  • Real time arousal monitoring
  • Preventing problem behavior in

children

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Electrodermal Activity

  • Measure of skin

conductance

  • Sympathetic ANS

activates

  • Skin becomes more

conductive

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EDA Signal

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Early Conceptions

  • Goal

– Measure and represent arousal level – Indicate high and low arousal

  • Target user

– Teachers in centers for autism – Children on the spectrum

  • Data

– Difficult to understand – Hard to correlate with visible arousal

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Related Systems

Affectiva Software

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Related Systems

Affectiva Software

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Related Systems

Elliott Hedman et al

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Our Approach

  • Use colors and shapes to represent

arousal level and arousal change

– Basic information – Easy to process – Fast to process

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Circle Scheme

  • Variable #1: diameter of

grey circle

– Represents baseline – Function of history

  • Variable #2: diameter of

red circle

– Represents current arousal – Function of current EDA (perhaps smoothed over some amount of time)

Hyper- aroused Hypo- aroused

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Color Scheme

  • Variable: color

– Function of EDA relative to baseline

Highest relative arousal Lowest relative arousal baseline

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Other designs

  • Images intuitive for children
  • Physical sensor changing state
  • Using directionality to show

increases in arousal

  • Using baselines of signal to

determine arousal level

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Design decisions

  • Focus on direction of the signal

(increasing and decreasing)

  • Use basic shapes and figures: arrows
  • Focus on teachers as a user
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New Design Scheme

  • Signal arousal change rather than

level

  • Eliminates need for baseline*

*sort of.. We’ll get back to this later

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EDA Quick View

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This display changes…

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This shows the raw EDA This symbol shows the recent trend in arousal change A blue dash indicates no Trend toward rising or falling

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This display changes…

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This shows the raw EDA This symbol shows the recent trend in arousal change A pink arrow pointing up indicates arousal is rising

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This display changes…

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This shows the raw EDA This symbol shows the recent trend in arousal change A green arrow pointing down indicates arousal is falling

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This display changes…

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This shows the raw EDA This symbol shows the recent trend in arousal change The arrow can be thick or thin. A thick arrow indicates a rapid change.

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This display changes…

1.2

This shows the raw EDA This symbol shows the recent trend in arousal change When a purple box appears, this means the signal is very jumpy (labile)

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Stabile signal Labile signal

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Lability

  • Frequency of phasic EDA
  • Individuals can be more stabile/

labile

  • Associated with high cognitive load
  • Also stress
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EDA Quick View

.25

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.37

EDA Quick View

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1.54

EDA Quick View

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1.62

EDA Quick View

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1.4

EDA Quick View

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1.4

EDA Quick View

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2.88

EDA Quick View

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.74

EDA Quick View

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  • Information

available:

– Rising or falling – Fast or slow – Stable or labile – Raw EDA

  • Information not

available:

– Context, how current state fits into individual’s history

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Testing with Dot Lucci

Director of Consultation for MGH/YouthCare

  • Former teacher and school psychologist
  • Works with teens with Aspergers
  • Consults on how to make spaces and

systems more compatible

  • Clinical interest in anxiety & relaxation
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Initial Reactions

  • Distracted by graph
  • Hard time remembering significance of

colors

  • Found thick-thin system for arrows non-

intuitive

  • Not complicated, just would take some

time to learn

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  • Need to find a way to capture

gradual change (particularly rise)

– Feature where you can see net change over x amount of time – Allows for “antiseptic bounce”

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  • Interface should be customizable for

user

– Option to hide graph – Graph windowed to different time spans – Option to measure across different time spans

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  • Interface should be customizable for

monitored individual

– Calibrated to kid’s own normal range – Name and photo of child next to display

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.37

Caroline

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Ultimately teacher’s choice how to use the information

  • Match optimal arousal with setting

– Higher for PE – Lower for reading

  • Still need for learning, attention to
  • ther cues
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Other possible ways..

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EDA Quick View

.25

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.37

EDA Quick View

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1.54

EDA Quick View

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1.4

EDA Quick View

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1.4

EDA Quick View

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2.88

EDA Quick View

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.74

EDA Quick View

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Data Processing

Cleaning up the data

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Filtering

33 size filter

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More Filtering

Median filtering

Cleaning up the data

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Curve Fitting - Gaussians

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Curve Fitting - Gaussians

10 minute intervals – 2 Gaussians/interval

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Curve Fitting - Gaussians

40 min of data - Arousal increasing? Decreasing? Constant?

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Curve Fitting - Gaussians

40 min of data - Arousal increasing? Decreasing? Constant?

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Future Work

  • Testing Session with teachers and

parents

  • Next system prototype
  • Reiterating the design process
  • What kind of rises in arousal to focus

in the real setting?

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Thank You

  • Matthew & Roz
  • Dot Lucci
  • Elliott Hedman
  • The Groden Center
  • The rest of our class!