The brain, neurological and vestibular systems were the subject of this
chapter. Pressure on the brain and astronaut headaches were documented, along with
difficulty in making estimates and judgment. Cognitive impairment was correlated to
the space environment, and Alzheimer’s Disease-like symptoms were noted. A
brain/mental health monitor was described. Space-induced neurological disorders were
discussed and neurodegeneration and neurological consequences of the space
environment were considered. The effect on balance and orientation of the space
environment was documented. The vestibular system was discussed and astronaut
disorientation was documented. The consequences of the space environment on the
vestibular system were discussed.
Keywords: Alzhiemer’s Disease, ampula, cilia, cochlea, cognitive
development, endolymph, equilibrium, Massachusetts General Hospital, McGill
University, neural circuits, neurodegeneration, neurology, neurovestibular, otolith,
saccule, Skylab, spatial, utricle, vestibular system.
