Monitoring the diagnosis of auricular points: contrasting the performance of the VAS and the electrical detector. Citation: (Rouxeville 2010)

Yves Rouxeville, lecturer in charge of the Auriculotherapy Curriculum for the Inter-University diploma (DIU) in acupuncture at the Université de Nantes, and colleagues, conducted a study in response to a request made by Professor Youenn Lajat that the Vascular Autonomic Signal (VAS, also known as Réflexe Auriculo-Cardiac or Nogier Pulse) be validated. At the time, Professor Lajat was the national president of the Coordination Committee for the DIU. With the question of potential for bias from a ‘human-on-human reading’ using the VAS, establishing statistical correlations between two detection approaches (the VAS and electrical differential detection), Lajat suggested that a study could make it possible to validate auricular point diagnosis using the VAS.

From a historical perspective, it is indispensable to recall the blind testing achieved using the Acus system developed by Prof. Serguei Timochevski, who, in November 1996, observed a concordance between detection achieved by the VAS and electrical differential detection plus “a general concordance of 90% between detection by the Acus system and electrical detection.”[1, 84-85, 128-130]

Manual recognition of the VAS is well documented. It has been demonstrated[1, p. 35-41], [2, p.123-125]. After 20 years of practice, the most reliable auricular stimulations retained were among those demonstrated by Paul Nogier in the course of his productive mentorship.[3] Electrical detection has been demonstrated[4] [2, p.117-121].

For the purpose of this research, the European Community-standard medical devices approved in France for all general practitioners in clinical setting were used. The detector was calibrated on Point Zero on the right ear of a right-hander (or on Point Zero on the left ear of a left-hander). Until 2008, the AGISCOP®-branded device was used. In 2009, the researchers have begun to use the MODULO 100® as it offers the benefit of an electronic screen and scale for easier tracking and logging of readings.


  • The points known as phase 2 or 3 auricular points, as early as 1995, generally appeared to be presenting a much lower drop in impedance than the reference point.[4] [5, p.29]. 
  • A blind study conducted in 2008,[6] recorded 241 points on the Romoli sectogram.[7] 
    • Of the 186 auricular points detected by Heine lamp[1, p.104-105], 120 registered a strong impedance drop, 53 registered a weak drop, and a total of 93% of these points showed an impedance drop. 
    • Of 173 auricular points detected by scanning the auricle with the white tip of the Black & White Detector[5, p.26], 116 points showed a strong impedance drop and 38 showed a weak impedance drop for a total of 89% of the points showing an impedance drop. 
    • Of 43 auricular points detected by scanning the auricle with the black tip of the Black & White Detector[7, p.26], 29 are also positive when stimulated by the color blue forty four. And, 28 of these points registered at higher impedance.
  • A new study in 2009, allowed researchers to flesh out the results observed on the auricular points detected by using the Heine lamp.
  • Auricular points detected by scanning simultaneously with frequencies 3.75 Hz and 8.74 Hz (using what is known as “the twin-key DB”)[1, p.141] [7, p.33], fell mainly into 2 groups: a strong impedance drop and a weak impedance drop. Further analysis of these points by projecting on them the colors orange twenty one and blue forty four would be instructional.


  • Phase 2 and phase 3 auricular points are weak impedance points. When treated by standard needle insertion, laser or electrical current, they are effective in chronic and or complex disorders. 
  • In our 2008 and 2009 studies, we strived to avoid the bias by beginning in the blind and using the most subtle tests first, and by ending our experiment with electrical-detection proving. 
  • - auricular points detected by the Heine lamp or by the white-tip scan or by the Twin-key DB, fall under 2 categories : strong or weak impedance drop. 
  • - the auricular points detected by both the black tip of the Black & White Detector and the color blue 44, are considered the so-called energetic-leak points. They were found to be of higher impedance.


  • Auricular points come under two levels of impedance drop. 
  • A large portion of the points detected by the VAS are subtle. These are found to show an impedance drop less noticeable than in points sensitive to painful pressure. 
  • Detection by the VAS is not some notion of the mind. In our opinion, it statistically appears to be valid. 
  • The effectiveness of Auriculomedicine is evidence-based; it can be proven with the right level of testing.

Citation: Rouxeville, Y, LeBel MR, Meas, Y, Trabelsi D. Monitoring the diagnosis of auricular points: contrasting the performance of the VAS and the electrical detector. International College of Auriculomedicine and Auriculotherapy Review website. April 17, 2010. Accessed April 2, 2021.

[1] Rouxeville, Y. Acupuncture auriculaire personnalisée, Sauramps Médical Montpellier; 2000.
[2] Rouxeville, Y, Meas, Y, Bossy, J. Auriculothérapie, Acupuncture auriculaire. Springer Verlag France; 2007.
[3] Rouxeville, Y. “Index des cours effectués par Paul Nogier” from February 27, 1981 to July 9, 1994. May be consulted at
[4] Rouxeville, Y, “La détection électrique” in Cahiers de Biographie number 133, (Paris:1995)
[5] Rouxeville, Y, A Course in Auriculomedicine, Dux Lucis Books, 1st ed., (Santa Monica:2006)
[6] Rouxeville, Y., Meas, Y., “Auriculothérapie :” Le RAC-VAS, contrôle de sa mise en évidence, in Revue Acupuncture et Moxibustion 2008 ; 7 (3) p.239-243, Marseille
[7] Romoli, M., Agopunctura Auriculare. Utet, (Torino:2003)

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