A method of promoting neurogenesis by administering a therapeutic amount of a phosphodiesterase inhibitor compound to a patient in need of neurogenesis promotion. A compound for providing neurogenesis having an effective amount of a phosphodiesterase inhibitor sufficient to promote neurogenesis. A phosphodiesterase inhibitor for promoting neurogenesis. A method of augmenting the production of brain cells and facilitating cellular structural and receptor changes by administering an effective amount of a phosphodiesterase inhibitor compound to a site in need of augmentation. A method of increasing both neurological and cognitive function by administering an effective amount of a phosphodiesterase inhibitor compound to a patient.
