another, "magnificent mind at any age with dr. daniel amen," was aired before january 1, 2009. neurologist michael greicius, director of the stanford center for memory disorders and principal investigator of the functional imaging in neuropsychiatric disorders laboratory at stanford stated, "the pbs airing of amen's program provides a stamp of scientific validity to work which has no scientific validity." these programs have been described as infomercials for amen's clinics. the program's depiction of the "wonders of ginkgo and other 'natural' products such as st. john's wort." was also criticized. alternative-medicine skeptic and physician harriet a. hall and neurologist robert a. burton criticized pbs for the airing of these programs. michael getler, the pbs ombudsman, replied that "pbs had nothing to do with the 'brain' program's content and did not vet the program in any way." local pbs affiliates "make their own editorial decisions based on their own guidelines about what to air," he wrote.