In this volume specific cognitive sub-functions are identified and indications of how basic vestibular input contributes to each are described. The broad range of these functions is consistent with the broad spread of vestibular projections throughout the cortex. Combining vestibular signals about the head s orientation relative to gravity with information about head position relative to the body provides sufficient information to map body position onto the ground surface and underlie the sense of spatial position. But vestibular signals are also fundamental to sensorimotor control and even...