Hallum, Luke E Human primary visual cortex (V1) is selective for second-order spatial frequency. [electronic resource] - Journal of neurophysiology May 2011 - 2121-31 p. digital Publication Type: Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural ISSN: 1522-1598 Standard No.: 10.1152/jn.01007.2010 doi Subjects--Topical Terms: Adaptation, Ocular--physiologyAdultHumansMagnetic Resonance Imaging--methodsMiddle AgedOrientation--physiologyPhotic Stimulation--methodsReaction Time--physiologySpace Perception--physiologyVisual Cortex--physiologyYoung Adult