This thesis represents a work of basic research into dimensions of time and space, referred to as temporality, in the condition Alzheimer's dementia. In this theoretical, text-based study, temporality was explored as a dual exposition, in ordinary functioning and in impaired functioning. As expected, the influence of time and space, was found to enter each experience and was observable in every facet of human endeavour and behaviour. Significantly, however, fundamental new interpretations were developed regarding the role of temporality in human life and functioning. Temporality was identified as an essential, common component of both cognitive functions and cohesive identity construction in a unified view of body and mind. As an illustration and clarification of this concept of temporality as a subjective, psychological clock, an innovative framework, the Personal Space-Time model was developed.