The theory of microgenesis is based on the assumption that every mental event is the result of an unfolding process that passes through the individual stages of evolution and ontogenesis. This process, which follows evolutionary neural hierarchical structures, is applicable to aspects of perception, action and consciousness. A disturbance of the microgenetic unfolding process, i.e. a neurological symptom produced by a brain lesion, is seen as a snapshot of a process that manifests prematurely, and thus in an incomplete form. The appearance of the symptom correlates with the height of the lesion. Microgenetic ideas are also represented in Gestalt therapy, a psychotherapeutic method whose theory is also based on the microgenetic unfolding process.