Figures at a glance

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FIGURE 1

*The blue curve represents the air conduction and the red one the bone conduction. Intermediate frequencies at 750, 1500, 3000 and 6000 Hz are omitted for clarity [5,6]

Figure 1: The listening test with ideal curve, constructed by Tomatis

FIGURE 2

*The air conduction is represented in blue and the bone conduction in red, both for the right (R) and left ear (L). The little red vertical dashes bottom indicates localization (spatiality) errors. The auditory laterality is measured at the 5 frequencies indicated; V means front (sensitive right) an H behind (sensitive left). There is some change in the laterality from left to right during the therapy.

Figure 2: Erhardta’s listening tests before, 2005 (above), and after the therapy, 2008 (below) [6]

FIGURE 3

*The data were taken with the eyes closed (odd-ball paradigm) and passive condition with 80 dB binaural tones. A clear N100 response is present, but no clear N200 nor P300 response

Figure 3: Cognitive auditory evoked potentials following the Erhardt’s rare tones before therapy in 2005 [6]

FIGURE 4

*The vertical color bars indicate the activity in µV. There is abnormally strong d activity frontal and in the ß map the damaged lesion area is seen left temporal. Moreover, the a activity is asymmetric

Figure 4: Erhardt’s brain map before the therapy, with d top left, ? bottom left, a top right and ß bottom right [6]

FIGURE 5

*Left, right and front (below) views, with the subject left, the control data in the middle and the difference between them on the right. The d activity is plotted at the top, below it the ? activity, the a activity and the ß activity at the bottom. The maximum Z-scores or standard deviation, given in µV squared, are indicated by Max / Min in each left upper corner

Figure 5: Erhardt’s brain map with the eyes closed, after the therapy [6]

FIGURE 6

*Note that the negative potentials are plotted upwards. Most of the AEP’s are present, particularly the attention potential P300(2) with the rare tones (red curves) at 332 and 340 ms.

Figure 6: Part of Erhardt’s QEEG Cognitive Auditory Evoked Potentials, at Fz, Cz, and Pz, after the therapy in 2008, [6]

FIGURE 7

*See Figure 8 for the associated brain maps. The blue stars indicate left-right spatial errors in the air conduction, which disappear with stronger sound volume and the red crosses indicate those in the bone conduction

Figure 7: Listening tests before (above) and after a large part of the therapy (below) of an autistic little boy [5,6]

FIGURE 8

*The solid red line represents the T4 complex and the broken blue one the T3 complex. The T complexes are measured as a sum of the P100, N100, P200, and N200 intensities. Normally T4=T3 when language disorders are absent, which is only the case after the therapy. Note that in the brain map the blue color represents electrical negative voltage, i.e. high brain activity and the red color therefore low brain activity. After the therapy the brain activity left-right is much more harmonized.

Figure 8: Middle latency auditory evoked potentials (MLAEP’s) and d brain maps of Freddy before (above) and after the therapy (below) [5,6]

FIGURE 9

Figure 9: Listening test of Maurits before (above) and after (below) part of the therapy [6]

FIGURE 10

*Note the scales in µV, on the sides, which indicated much stronger a and weaker ß strengths after the therapy

Figure 10: Brain maps of Maurits before (left) and after (right) part of the therapy [6]

FIGURE 11

Figure 11: AEP curves of Maurits before (left) and after (right) a large part of the therapy [6]

FIGURE 12

*The selectivity could not be measured and the auditory laterality is indicated at the bottom with V (front, sensitive right) or H (back, sensitive left)

Figure 12: The first listening test of Nike in 2016 (above) and after three years (below)

FIGURE 13

Figure 13: Brain maps of Nike before (October 2016, left) and after (August 2019, right) the therapy, taken with the eyes open. The Z-scores are indicated in upper left corners

FIGURE 14

*The red curves are taken with attention to the rare tones (given at 1500 Hz) and the blue ones as reactions to the same repeated tones of 1000 Hz. Note that positive potentials are plotted downwards. The blue areas indicate the possible location of the important P300 potential

Figure 14: Measured AEP’s of Nike before (left) and after (right) the therapy for the three positions on the skull Fz, Cz, Pz

FIGURE 15

Figure 15: First listening test of Rick (above) at age 7 yrs. and already after ~3 months and first cycles of listening (below). The selectivity could not be tested, therefore assumed closed, and the laterality is indicated at the bottom with L left, R and V right. Spatiality errors are indicated with red dashes at the bottom

FIGURE 16

Figure 16: Brain maps of Rick, with the eyes open, at age 7 yrs. (left) and after ~3 months (right)

FIGURE 17

Figure 17: AEP’s measured of Rick with the same setup as the brain maps, at age 7 yrs. (left) and after ~3 months (right). The blue areas indicate the possible location of the P300 potential