[visionlist] professor Angel Vassilev has passed away

Andrew Watson awatson3 at apple.com
Mon Sep 13 11:37:55 -04 2021

I came to know Professor Angel Vassilev through his connection with my PhD supervisor, Jack Nachmias(1). When I traveled to ECVP1987 in Varna, Bulgaria, he was extraordinarily welcoming, and interested in my work. We met again many times over the years, usually at ECVP. I recall (vaguely) one evening in Bristol (ECVP1988) when he and his colleagues educated me in the proper ingestion of vodka. His work, especially on the temporal dynamics of spatial vision, was a great influence. I will always remember him as a smiling, curious, generous soul. Below is a picture of the two of us from ECVP in Varna.

(1) Nachmias, J., Sansbury, R., Vassilev, A., & Weber, A. (1973). Adaptation to square-wave gratings: in search of the elusive third harmonic. Vision Res, 13(7), 1335-1342.

Andrew Watson 
Chief Vision Scientist
 Apple | Panel Process & Optics
abwatson at apple.com

> On Sep 13, 2021, at 5:42 AM, Vidinova, Margarita <mb.vidinova at ulster.ac.uk> wrote:
> Please post:
> It is with a great sadness that we announce that our esteemed mentor and colleague professor Angel Vassilev has passed away. Professor Vassilev was a prominent Bulgarian scientist in the field of vision. After obtaining a PhD at the Institute of Physiology “I.P. Pavlov” while working with professor V. D. Glezer, he was actively involved in the study of several key issues in the field of visual psychophysics and electrophysiology. He had a long and successful career as a Professor of Visual Physiology at the Institute of Physiology in Bulgaria where he founded his laboratory “Visual Information Processing” in 1978. He led a wide range of original research studying the latency of visual perception as well the latency of individual waves of visual evoked potentials at different spatial frequency, perception of orientation, flicker perimetry, the short wavelength cone pathway etc. In 1987, he organized the Tenth European Conference of Visual Perception in Varna, Bulgaria, giving the unique opportunity to young scientists to meet world-renowned scientists visiting Bulgaria for the first time.  
> With the passing of Professor Vassilev the Bulgarian and international academic community have lost a brilliant scientist. We lost a remarkable man who took a lifelong interest in the welfare, wellbeing and career development to the many colleagues who benefited from his tutelage. 
> Dr Margarita Zlatkova (Vidinova) 
> Group of Sensory Neurobiology 
> Institute of Neurobiology 
> Bulgarian Academy of Sciences 
> Sofia, Bulgaria 
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