Gerontechnology: the linking of gerontology and technology -- Gerontechnology: the challenge -- Age-related changes within biological systems: integumentary, skeletal, and muscular -- Age-related changes within biological systems: circulatory, respiratory, and digestive -- Age-related changes within biological systems: urinary, reproductive, endocrine, and immune -- Age-related changes within biological systems: the nervous system and the special senses -- Gerontechnology and vision -- Gerontechnology and hearing -- Ergonomic design for older adults -- Intelligent system technology for enhancing the quality of life -- Robotics and independence for the elderly -- Keeping an older population mobile -- Technology, aging, and communication -- Gerontechnological ontology: human experience within extraordinary frameworks.