In order to define a subject-related headframe coordinate system and head shapes of subjects, five index points were digitized with a Polhemus 3Space® Fasttrack (Polhemus, Colchester, VT, USA) prior to each measurement.
We defined a subject as habituated when it licked on the nipple of the bottle within the first five minutes of the experiment.
Similarly, we defined a subject to be sensitive if its resistance index was less than the 25 percentile of the population.
We defined a subject as habituated when it grasped for meal worms within the first 5 min of the handedness test and licked on the nipple of the bottle within the first 5 min of the head turn test.
We defined a subject as "unexposed" to TCE if all jobs had been assigned an exposure probability of 0%, "possibly exposed" if one or more jobs had been assigned an exposure probability of < 50%, and "probably exposed" if at least one job had been assigned an exposure probability of ≥ 50%.
We defined a study subject's neighborhood as a half-mile (805 m) "network buffer" around his or her residential address, comprising locations reachable within a half-mile walk along the street network.
The lowest hierarchy of IPC, subgroup, precisely defines a field of subject matter considered to be useful for "searching" purposes.
Cartier-Bresson's love affair with Paris or Ansel Adams's with Yosemite are undoubtedly more famous, but Mr. Shulman, working as a commercial photographer, has done as much as either of them to define a romantic subject: the beauty and glamour of the California modernist lifestyle.
In contrast, binding constraints define that a subject who performed one task must also perform the corresponding bound task(s).
