Cardiac Synthesizer User Guide
Heart Coherence team, june 2006

www.heartcoherence.com

Welcome to the userguide for Heart Coherence team's Cardiac Synthesizer v.1.0.

The Cardiac Synthesizer is in the first place a learning and teaching tool to visualise the effect of Heart Rate Variability on the ECG in general, and in particular on ICC, Internal Cardiac Coherence.

The Cardiac Synthesizer can be used as a stand-alone application, but is in particular intended to gain more insight in the therapeutic use of the Heart Tuner. The Cardiac Synthesizer can export synthesized ECG and HRV data which can be played in the Heart Tuner as if it were a normal recording.


The synthesized "ECG" time series of the Cardiac Synthesizer - not aiming to exactly replicate the natural ECG, but still having a virtual identical spectrum, perfect for teaching purposes. In this example, the effect of a single HRV wave can be discerned

The Cardiac Synthesizer is itself not a measuring tool.

The user guide will focus on the newest insights on the homeo-dynamics of simultaneously optimized HRV and Internal Cardiac Coherence, offering revolutionary possibilities for psycho-physiological therapy and biofeedback training. Secondly, it gives a step-by-step technical guide.


Main screen overview of the Cardiac Synthesizer with deafult settings - click to see full size with explanation

 

The Cardiac Synthesizer is online available. Info and download location: www.heartcoherence.com/cardiacsynth.


OPTIMIZING HEART RATE VARIABILITY AND INTERNAL CARDIAC COHERENCE - SOME GUIDE LINES TO THE PHYSICS, PSYCHOLOGY AND PHYSIOLOGY OF HARMONIC INCLUSIVENESS

This part is taken from the preliminary user guide with the new Heart Rate Variabilty Module of the Heart tuner

The new Heart Tuner may dramatically prove that high Internal Coherence or ICC (Awareness Focus, Empathy) and high Heart Rate Variability (Life Force, Vitality) cán exist together - thus finally dismissing Heart Math's claim that ICC is "entraining low HRV" - it is definitively NOT.

A universal formula for optimizing HRV, and generally biological sustainability was already found by Prof. Ary Goldberger to be a fractal. Whereas traditionally merely "high" HRV was found to be a predictor of (cardiac) health and longevity, Goldberger claims that actually the HRV should be fractal.

Now we have found that ONLY a fractal HRV (maximum vitality) enables high Internal Coherence (maximum self-awareness) at the same time. Both together may form an alltogether new paradigm of cardiac health, and general psycho-physiological well-being, and therefore a clue to optimal diagnosis and biofeedback training.

A rather technical prove of how fractal HRV allows optimised ICC (and vice versa) can be visualized with the Cardiac Synthesizer, which can be downloaded here.

Allthough the Cardiac Synthesizer is only intended as a learning and teaching tool, the ECG data generated can conveniently be exported and then imported and played by the Heart Tuner as if it were a normal recording. Screenshots of the Cardiac Synthesizer and a fractal HRV spectrum on the Heart Tuner are below.

Simplified diagram of HRV and ICC in the human psycho-physiology. HRV emerges as a controlling nucleous , resp. source of life force (vitality); ICC is the principle of pure self awareness or indiviudation, usually resulting in psychic energy, that is, emotions.


The more advanced diagram shows the precize interactions between HRV and ICC, that is practically between vitality and emotions. We call this a subtle, or subjective control. This means that coherent emotion (the result of self-awareness or individuation) can facilitate more life force, whereas at the same time coherent action (the result of life force) can invite more self-awareness.

Above diagrams visualize in a way an "imperfect", but hence all the more realistic picture of the complex equilibrium of life force and emotion (in a slightly different context also called "homestasis" or better, "homeodynamics"). That is, in the normal human condition, each and every action (and perception) as well as each and every emotion, will have a certain repercussion on the allover equilibrium. So they always introduce a (temporary) fluctuation and state of less coherence, a diversion of the (theoretical) ideal condition. Only this reduction of coherence causes an energy flow which enables us to act and feel.

Now, the new and emerging paradigm of optimized equilibrium is what is called "Harmonic Inclusiveness". This means maximum coherent action and emotion, that is, involvement with maximum vitality and self-awareness. Measured in the heart, this means maximum HRV PLUS maximum ICC at the same time. As we will see, and already theoretically demonstrated with the Cardiac Synthesizer, Harmonic Inclusiveness is gained by increasing the fractality of the heart rate, which is ultimately the result of an allround healthy life style.

It is the goal and purpose of the new Heart Tuner, together with the Cardiac Synthesizer, to serve as an education, diagnosis and training tool for Harmonic Inclusiveness in all spheres of life.

This is the first beta release of the HRV Module, as well as the Cardiac Synthesizer. In due time we hope to build up supportive real life data.

In addition to the general psychology and physiology of increasing the amount of Harmonic Inclusiveness, it is observed that during a feeling of open-heartedness and connectedness (empathy) and thus high internal coherence, the heart often tends to park itself at a specific frequency (around 1.6 Hz). This is believed hinting at a "globally scaled" heart rate. Global Scaling (theory) is based upon the idea that all natural rhythms (and in fact all measures) in the entire universe are fractally organised, forming an infinitely connected web of life. Our heart rate, that is rather, our HRV spectrum, in order to be part of that cosmological order, is therefore ideally fractal as well. Precisely this fractal condition appears during high internal coherence. Global scaling theory may may thus be an explanation why internal coherence is associated with a feeling of connectedness.

A (momentarily) constant tacho (heart rate), while the HRV spectrum in the healthy subject is nevertheless high, is the natural base line of the fractal heart.


The "Global Scaling" fractal, invented / discovered by Hartmut Muller. More on global scaling e.g. at http://www.info.global-scaling-verein.de/ or http://www.globalscalingtheory.com/

 

STEP-BY-STEP USER GUIDE FOR THE CARDIAC SYNTHESIZER

This is the technical part which will discuss some basics of the wave physics of HRV and ECG resp. ICC and how to visualise the different wave forms and their interactions with the Cardiac Synthesizer. Understanding of all these technical details may not be needed in daily practical use of the Heart Tuner, but especially the part about fractality in the HRV can be quite helpfull as a background for state of the art, effective therapeutic / bio-feedback practice.

Step-by-step some theory is discussed, and then some instructions how to visualise it with the Cardiac Synthesizer (ACTION). It's best to follow below instructions and avoid playing with other buttons to get the maximum out of it.

All the steps can also be seen in the 2/3rd. scale step-by-step movie (gifmation).


1- Synthesizing an ECG look-alike

A natural and more or less coherent ECG spectrum typically looks like this:


Internal Cardiac Coherence (ICC) in the ECG spectrum is ideally defined as the perfect regular (arithmetic) spacing among all contained ECG frequencies. Practically, ICC as measured directly with the Heart Tuner, will in some cases also reward a spectrum which may look less coherent by inspection alone. But even if coherent, the natural ECG spectrum may vary considerably from person to person, and from moment to moment.

In the Cardiac Synthesiser, the starting point is the creation of the "ideal" ECG spectrum, which looks like this:



The synthesized spectrum in this example is composed of 7 frequencies with a proportionally decreasing amplitude, giving the best result for an ECG look-alike (spikes). The basic frequency was choosen just off-integer (1.01Hz) to avoid a too ideal digital effect.

ACTION: Create a synthesized ECG with different heart-rates and a different number of composing frequencies. First click RESET and reduce the HRV effect to zero:


Heart Rate section - click reset (affects ALL settings), use
the "Nominal Heart Rate" slider bar to set the heart rate,
"Spectral Count" to change the nr. of composing frequencies.
See how this affects the ECG and Spectrum graphs. Also
see how integer values (e.g. exactly 1Hz) usually produce an
overly
digital image. In the tachogram, the beat-to-beat interval
graph is straigth (no HRV)
and moving up/down with the
nominal heart rate setting. The "0.1Hz" button can be used to
reset the heart rate.

Heart Rate Variability section - in this test, after
resetting all values, first set the "HRV power" to zero
(to the left).



2- Applying basic Heart Rate Variability (HRV)

The Heart Rate Variability was sometimes though to be but a lower frequency in the ECG spectrum, but this is not correct. The HRV functions as a frequency modulator for the EGC signal, (that is, proportionally for ALL the frequencies in the ECG), just like music is modulating a carrier wave in FM radio. So, it is a different system in the heart's electro-physiology. Biologically, one could think of it as how life force (vitality) is modulating emotional momentum. First, we apply a single HRV wave of 0.1 Hz.

In real life such one single peak in the HRV spectrum could be the result of what is called monotonic breathing. The breathing has a direct effect on the heart rate (in - slower, out - faster). Heart Math Institute uses this as an actual technique even, but regular breathing is unnatural (allthough it may be opportune for some purposes) and is in fact the best possible way to distort and replace both the natural HRV complex (surely the fractal one) and natural ICC.

ACTION: First click "Reset". The HRV Power is then at 175 ms., which means that the heart beat interval has a plus or minus 175 millisecond variation on top of the nominal heart rate. Set the "HRV freq's." (nr. of HRV freq's. in the HRV spectrum) to 1 (left) and the "HRV max. freq." to 0.1 Hz (click 0.1Hz button). See the 0.1 Hz peak in the HRV spectrum, and the slow wave in the tachogram. See also parallel to the tacho, where the beat-to-beat interval is lower, the ECG spectrum is more compressed, and vice versa. This is the heart rate modulation in the ECG.



ACTION: Now, while leaving the "HRV freq's." to one single frequency, play with the other buttons to see the results. See how the HRV settings are directly visible in the HRV spectrum window, and how they affect the ECG spectrum. Also check this out for various nominal heart rates.

A nice feature of the Cardiac Synth is showing how the HRV appears as sidebands in the ECG spectrum. This is the result of the frequency modulation.
ACTION: For example, make the following settings precisely:

 

Nominal heart rate: 1.0 Hz (exactly now)
Spectral count: 8
HRV frequency: 0.19 Hz
HRV Power: 15 ms.
HRV freq's: 1

ACTION: Gently play with the HRV frequency and power to see the sidebands floating in the ECG spectrum.

Now, the slow HRV wave is clearly visible as sidebands in the ECG spectrum. This is in essence how HRV distorts the spectrum.



3 - The ICC - Internal Cardiac Coherence screen

The ICC function shows how perfectly arithmetic the ECG spectrum is. It reflects in one single graph (which is also called "cepstrum") how regular the heart beat is over a certain period, and this directly relates to our capacity for pure awareness focus. The general idea is that we consciously perceive that which is neither changing too fast, nor too slow. The faster the contained change, the more extrovert (matter for the brain, or emotion for the heart) is our mental flow. Coherent emotion is measured as the most regular pace, but this should not go on the account of vitality and involvement. So, a high ICC graph is a measure of the pure, unqualified flow of the heart's intelligence, which translates into a feeling of connectedness, empathy and compassion. Changing arithmetics, on the contrary, is the motor of externalized emotion. So clearly, the psychological and physiological difference in HRV dynamics and ICC dynamics lies in their playfull interrelation, creating the real life situation of fluctuating vitality and emotion as described in above introduction, rather than in any fundamental difference.

Technically, the ICC analysis is a subsequent ECG spectrum. The horizontal scale is essentially a time scale, but preferrably measured as 1/Hz as it does not indicate an actual time progression. The vertical scale is the amount of internal coherence, normalized to 100%.

ACTION:
Repeat above tests while looking at: A) how the heart rate moves the ICC peak horizontally and B) how HRV can suppress the ICC peak.


4- Applying multiple HRV frequencies

The natural HRV spectrum shows many peaks, that is, many frequencies which together affect the heart rate. First, the "magnitude" bar at the right side of the HRV spectrum window is explained:

The "magnitude" bar in the HRV spectrum. It serves but as a rule of thumb to estimate the totally contained magnitude of all the HRV frequencies together, to easily compare different settings. The reference value (100%) is the magnitude of a single 100mv HRV wave. Except for the HRV power settings, the software automatically keeps the contained magnitude on a more or less constant level.
ACTION:
Play with the HRV power to see the effect of the magnitude.

note: "magnitude" is not the same as power. The spectrum shows the power (hence is called "power spectrum"). The power of a specific frequency is simply its manitude squared.


At this point we are getting to the key purpose of the Cardiac Synthesizer, that is to demonstrate how a natural HRV spectrum affects internal coherence. The effect of monotonic breathing which was already discussed earlier, and falls outside this category. The natural HRV spectrum can be completely chaotic ("random" is a better term) or "ideally", perfectly fractal. Both forms can be tested with the Cardiac Synthesizer.


The term "fractal" means "self-similar", which means that a shape or a pattern is built-up of smaller, similarly looking but not identical, copies (fractional parts) of itself. This is a real life (not merely mathematical) principle which means that any physical or etc. system has a higher internal organisation and symmetry than can be explained with normal natural laws (thermodynamics) alone. "Perfect" symmetry gets close to litteral recursion, whereas the opposite is complete chaos. Life (organic, atomic, cosmic..) exists right at the edge of order and chaos, of symmetry and a-symmetry, and that is where fractal patterns emerge.


The fractal HRV spectrum in the Cardiac Synthesizer is created by first taking the harmonic (symmetry) composite of a perfectly recursive (repeatedly scaling-up) series of frequencies, and then taking a normal linear (thermodynamic) spectrum of it. The result is a fractal. This fractal is further optimized if the original recursive ratio is precisely Golden Mean ("Phi" = 1.618). This way above spectrum is created with "Harmonic Explorer" (another program of Heart Coherence team).

ACTION: Click reset.

The number of HRV freqencies
is greater (10) after reset, and the "HRV style" selection box appears:

The default style is "fractal". Now first select the "random" fractal style. The "randomize" button appears. Then, play gently with the HRV Power bar and see the effects in all the screens. Also click to get a few randomized HRV spectra. Note: the software automatically takes care of a reasonable distribution of the HRV freqencies, arranges their amplitudes within limits and keeps the total power (resp. magnitude) as preset.

See that if the HRV spectrum is random, the more HRV power is present, the more it will distort and take down the internal coherence.

Advise: in order to properly interpret the effect of a specific setting, it is good to also play a bit with the other settings so that a more general picture emerges.

ACTION: Click reset, while leaving the HRV-style "fractal", then test the effects with the various HRV power settings.

All settings are the same, only this time the random HRV spectrum is replaced with a real fractal spectrum. Note that looking at the HRV spectrum screen alone, the difference may not at all be obvious. But the difference in Internal Coherence is very great.

Note: the number of HRV frequencies is disproportional with the actual slider bar setting, this is the result of the way the fractal is created. The same frequency numbers are actually used for the "random" mode, for easy comparison.

See that if the HRV spectrum is fractal, no matter how much HRV power is present, it will not considerably influence the Internal Cardiac Coherence. This proves that high HRV and high ICC, that is, high life force / vitality plus high self-awareness can exist at the same time.


5 - Some expert functions

ACTION: With the HRV-style in "fractal" mode, very gently move the "non-linear dyamics" slider bar left and right. This will move the harmonic ratio on which the fractal HRV spectrum is based, off Golden Mean ratio. See how generally this will take down the effectiveness of the fractally and affect the amount of internal coherence.

Conclusively, the Cardiac Synthesizer demonstrates that a Golden Mean centered fractal HRV spectrum allows high Internal Coherence at the same time, while it becomes obvious that a random HRV spectrum generally will take down Internal Coherence. The Cardiac Synthesizer may thus serve a theoretical basis for groundbreaking therapeutic and biofeedback practice - aiming at a higher and higher integration of Vitality and Emotion, that is verily, Harmonic Coherence.

ACTION: Export a synthesized ECG / HRV recording which can be imported as a normal recording by the Heart Tuner PRO-04 (and higher) Professional Edition. Select the duration, then click the "Save" button.

 


© All rights reserved, Heart Coherence team, 2006