The light sensitivity of the human visual system depends on the direction of view - Thoss F.; Bartsch B.; Tellschaft D.; Thoss M. (Journal of Comparative Physiology A, 2002)

The magnetic field sensitivity of the human visual system shows resonance and compass characteristic - F. Thoss; B. Bartsch; B. Fritzsche; D. Tellschaft; M. Thoss (Journal of Comparative Physiology A, 2000)