*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
*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]
*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.
*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
*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
*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]
*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.
*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
*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.
*Note the scales in µV, on the sides, which indicated much stronger a and weaker ß strengths after the therapy
*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)
*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
Figures at a glance