摘要: Abstract A model for description of behavior has been set up in which linked motor acts constitute the basic unit behavior. The evidence discrete nature these units is available studies on effects electrical stimulation brain and drugs act central nervous system. When modified by drugs, changes frequencies distribution are found. Alterations frequency units, when data recorded an all-or-none fashion, do not offer clear quantal or behavior, because possibility that alterations all partly a result loss gradations as “scoring artifact”. However, experimental sequences items, combined with independent frequency, good inherent items Description would satisfy was attempted but were found to be inadequate.