Have you ever wondered how you hear a voice on the phone? How do you even notice that a person has a cold or hoarseness? Did you ever think how can we perceive form, color and movement in video displays? Well, these are the result of wonderful research interactions between engineers and psychophysicists. 

This comes from research on hearing sounds and perceiving images by researchers using psychophysical methods relating stimulus intensities and human sensations. The International Society for Psychophysics (ISP) is a scientific organization dedicated to promoting the study and advancement of psychophysics—a field that explores the relationships between physical stimuli and the sensory, perceptual, and behavioral responses they evoke. The Society brings together researchers from diverse backgrounds, including psychology, neuroscience, physics, and philosophy, fostering interdisciplinary dialogue and collaboration. One of its main activities is the organization of the annual Fechner Day conference, where scientists present their latest research findings, exchange ideas, and discuss theoretical and methodological developments in the field.

The primary goal of the ISP is to support and disseminate high-quality research in psychophysics, while encouraging international cooperation and the training of new researchers. Through publications, symposia, and a strong academic community, the Society plays a key role in advancing both experimental and theoretical understanding of sensory processes. By maintaining a global network of scholars and facilitating the exchange of knowledge, the ISP contributes significantly to the ongoing development of psychophysical science and its applications in various domains, such as cognitive science, clinical psychology, and human-computer interaction.