1. Vestibular nuclei: activity of single neurons during natural sleep and wakefulness;Bizzi;Science,1964
2. Effects of sleep and waking on spontaneous and evoked discharge of single units in visual cortex;Evarts,1960
3. Otolith activity in weightlessness;Gualtierotti;Commun. XXIII. int. physiol. Sci., Tokyo,1965
4. Spontaneous firing and responses to linear acceleration of single otolith units of the frog during short periods of weightlessness during parabolic flight;Gualtierotti,1965
5. Tungsten micro-electrode for recording from single units;Hubel;Science,1957