title: Spatial periodicities of periodic complex cells in the visual cortex cluster at one-half octave intervals.
abstract: Within individual penetrations in the visual cortex, spatial periodicities of periodic complex cells differ by either one-half or one octave. When data are pooled from neurons subserving the central visual area in many cats, the results indicate that spatial periodicities cluster at one-half octave intervals over a 2 1/2-octave range (0.95 to 5.4 cyc/deg). Thus a relatively small number of such channels spaced at regular intervals along a logarithmic scale within each orientation column may suffice for this stage of spatial processing.
mesh_terms: D000818:Animals; D002415:Cats; D009474:Neurons / Q000502:physiology*; D010507:Periodicity; D010775:Photic Stimulation; D014793:Visual Cortex / Q000033:anatomy & histology / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*