"Kandel argues that when psychotherapy changes people, 'it presumably does so through learning, by producing changes in gene expression that alter the strength of synaptic connections, and structural changes that alter the anatomical pattern of interconnections between nerve cells of the brain.' Psychotherapy works by going deep into the brain and its neurons and changing their structure by turning on the right genes. Psychiatrist Dr. Susan Vaughan has argued that the talking cure works by 'talking to neurons,' and that an effective psychotherpist or psychoanalyst is a 'microsurgeon of the mind' who helps patients make needed alterations in neuronal networks. (221)"
— Norman Doidge (The Brain That Changes Itself: Stories of Personal Triumph from the Frontiers of Brain Science)