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ThoughtStream Biofeedback Performance Monitor

Section II - Sensitivity Adjustment

ThoughtStream contains eight sensitivity levels.  This allows a beginner to start at the top level, 8 and progressively worked down to the lower levels as one becomes more skilled at relaxing.  The levels are configured as a percent of change in the skin's electrical conductivity.  Changes n your skin's electrical conductivity correlate directly to changes in your physiology.  Changes in your physiology correlate to your relative feelings of tension or relaxation.

Level 8 is set to measure a 20% change over the entire range from red to orange to yellow to green.  Most people should be able to master this level with relative ease.  Level 1 is configured to measure a 700% change.  It would take considerable skill to master this level and the majority of people will never need to use level 1 to attain the results they desire.

See chart - Percentage Of Change In Skin Resistance

NOTE:  Everyone has their own unique response potential.  For some, sensitivity levels 7 or 8 will provide the same relaxation benefits that levels 2 or 3 provide for others.

Automatic Sensitivity Level Adjustment

ThoughtStream will automatically move between levels.  It adjusts itself to your particular physiology without your having to do anything.  Let's assume you begin at level 8, the easiest level.  Then after five or ten minutes you have successfully moved the display from all red to all green.  After a brief pause ThoughtStream senses that you have gone as far as you can go and moves you down one level in difficulty to level 7.  The process will repeat itself until you are no longer able to surpass the level (light all green).

Once you have finished your session ThoughtStream saves the last level of difficulty you were able to attain in memory.  The next time you turn on your unit it will begin from that level.  To change this, simply follow manual level adjustment instructions.

How To Read the LED Array During a Session

The array consists of an 8-segmented row of LEDs that are capable of displaying different colors at different times:  red, orange, yellow, or green  Your descent into relaxation is reflected by gradually "descending" colors.  Red will change to orange, orange to yellow, and the finally yellow to green.  You are able to see a graphical description of your progress.

Feedback and Skin Resistance:  A Relative Measure

Your skin resistance is not a constant - it  varies from day to day and from moment to moment - ThoughtStream must set a zero value when you begin a session.  ThoughtStream always assigns this starting point a full bank of red LEDs, regardless of whether you begin a session in a relaxed or stressed state. The changes in stress or relaxation level are reflected in the feedback are not absolute values.  All red does not mean that you are necessarily feeling stressed just as green does not mean you are necessarily in a relaxed state.  All changes noted by ThoughtStream are relative to your stress or relaxation level at the moment you started the session.

You may be in a very relaxed state when you start a session.  It may be difficult to produce shifts in the feedback during that session, even with sensitivity level 8.  However, you have accomplished the goal of being very relaxed.  At another time, you may be very tense after driving through traffic.  The simple act of sitting down with the intention of relaxing may take you into the green zone in a minute or two.  You may still be far more tense than the previous session.  You will be able to subjectively judge where you are in relation to previous sessions as you become more adept at recognizing your internal states.

Understanding How Automatic Sensitivity Level Adjustment Operates

As you reach the end of a level (all green) ThoughtStream continues to monitor your progress even though you see and hear no change in activity.  If, after a short pause it senses that you are able to go further, the display will shift in color as it moves down to the next lower level.  Getting this level to turn all green required you to relax more deeply than the previous level.

Why does it start in the middle of the next level?

When a new sensitivity setting is activated, the display does not go back to all red, which would indicate a 0% change; it drops to the percent of change you would have reached had you started at the lower level in the first place.

Think of the display as a meter showing numbers instead of colors to illustrate percent of change in electrical conductivity of your skin.  At level 8, all red indicates 0%, or no change has taken place.  One half-yellow and one-half orange (LED increment 13) would indicate a 7.6% change.  The end of the scale, all green at level 8 indicates a 20% change.

The scale at level 7 (all lights green) represents a 33% change.  A change of approximately 20% is indicated by one green and seven yellow lights. (LED increment 8).

The scale at level 6 (all lights green) is 55%.  To attain approximately a 20% change at this level the indicator would show three yellow and five orange lights (LED increment 14).  As you move progressively down each level, each light represents a high percentage of change.

See chart which you can refer to each time you use ThoughtStream.

Moving Up The Scale

Now let's assume you started at level 6 and you are having difficulty making any of the lights change, you are stuck in all red.  The system is capable of switching to a more sensitive level (in this case level 7) in about five minutes.  If at some point during the session, you were able to change the display a few increments then this feature is deactivated for the rest of the session.

ThoughtStream Users Guide Table of Contents

KOLD-TV, Florence & East Valley, Arizona, investigative report - stress and driving.
I was honored to provide the ThoughtStream Biofeedback device and the Proteus mind machine for this report.  To view the report click here> "X"

 

 

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