Annual Meeting
Fechner Day brings together researchers working on psychophysical theory, methods, and applications.
International Society for Psychophysics
From Fechner’s 1860 foundations to modern perception science.
Since Fechner established psychophysics in 1860, the field has asked how physical stimuli become perceptual experience. ISP supports the international community advancing that question today.
Society
What ISP Maintains
Proceedings
The society preserves proceedings and conference records from past annual meetings.
Membership
Membership fees help sustain the society and support student participation.
Next Meeting
Fechner Day 2027 · Québec City
The 43rd Annual Meeting of the International Society for Psychophysics will be held at Université Laval in Québec City, Canada, from August 15 to 19, 2027.
Read the announcementAward
Yuko Yamashita Memorial Award
The 2025 award for the best poster presentation by a young researcher goes to Harai A. Bester, Ariel University, Ari'el, Israel.
About the award and past winnersLatest
News
Fechner Day 2027 in Québec City
Save the date: Fechner Day 2027 will be held at Université Laval in Québec City, Canada, from August 15 to 19, 2027.
Harai A. Bester Wins the 2025 Yuko Yamashita Memorial Award
Congratulations to Harai A. Bester of Ariel University, Ari’el, Israel, winner of the 2025 Yuko Yamashita Memorial Award for the best poster …
Miguelina Guirao (1925-2026)
Today we bid farewell to Dr. Miguelina Guirao (1925–2026), Senior Researcher at CONICET and one of the most influential scientists in the development …
Community
In Memoriam
Miguelina Guirao (1925-2026)
Today we bid farewell to Dr. Miguelina Guirao (1925–2026), Senior Researcher at CONICET and one of the most influential scientists in the development …
Yuko Yamashita continues to encourage us
Author: Dr. Yoshitaka Nakajima (Fukuoka, Aug. 15th, 2023) Almost one thousand days have passed since our colleague, Yuko Yamashitaʼs, passing. On the …
Robert Teghtsoonian, im memoriam
Martha Teghtsoonian Robert Teghtsoonian (1932-2017) was born in Toronto, Canada, where his parents had emigrated from Armenia in the wake of the …