Origanum

3. Review of literature 3.1 The hippocampus and Cognition Hippocampus belongs to the limbic system of the brain. In 1960, O'Keefe and Lynn Nadel continued to investigate the functions of hippocampus. The behavioural inhibition theory was defined and justified many questions regarding functions of hippocampus. Eventually their investigations have been published an influential book, “The Hippocampus as a Cognitive Map” (O'Keefe et al, 1978). The spatial coding such as spatial memory and navigation