This became one of the bases of body psychotherapy since many of the most influential body psychotherapists studied with her or "Sensory Awareness" with Charlotte Selver at the Esalen Institute around 1962.
A great role in his researches played the collaboration with the colleague Elsa Gindler (1885–1961), whom he met in 1924 in Berlin.
Elsa Schiaparelli | Elsa Pataky | Elsa von Freytag-Loringhoven | Elsa Lanchester | Elsa Brändström | Elsa Maxwell | Elsa Lunghini | Elsa Gindler | Elsa Barraine | Body Sweats: The Uncensored Writings of Elsa von Freytag-Loringhoven | Roman Catholic Archdiocese of Siena-Colle di Val d'Elsa-Montalcino | Elsa the Lioness | Elsa, Texas | Elsa Respighi | Elsa Peretti | Elsa Osorio | Elsa Morante | Elsa Klensch | Elsa Kazi | Elsa Fayer | Elsa Chauvel | Elsa Bornemann | Elsa Bloodstone | Elsa Beskow | Elsa Bernstein | Elsa Andersson | Elsa Alvarez |
This work was strongly influenced by Summers' study with Charlotte Selver and Carola Speads both students of Elsa Gindler.