keep track of two vs at the initial state

Some examples from the web:

• Jun 22, 2010 ... Citation: Robinson R (2010) Hippocampal Neurons Keep Track of Two Things— One Moving, One Not—Simultaneously. PLoS Biol 8(6): ...
• JQuery and Javascript to keep track of two players in one Associative Array? up vote 0 down vote favorite. I am making a game of Simon, where ...
• How can I keep track of two lists in a function (fold) in OCaml? No problem. We won't show you that ad again. Why didn't you like it?
• Apr 15, 2010 ... A new study, however, illustrates how the brain can simultaneously keep track of two separate goals, even while it is busy performing a task ...

Some examples from the web:

• We provide data from successful English-speaking learners of L2 Spanish at the initial state of acquiring L3 French and L3 Italian relating to properties of the ...
• study of L3, particularly at the initial state, provides a distinct investigative angle into debates concerning post- critical period ultimate attainment, until now almost  ...
• hypotheses: (i) at the initial state of L2 acquisition, the learner draws on a grammar that has been transferred in its entirety from the L1, and (ii), the initial state L2 ...
• at the initial state of acquiring L3 French and L3 Italian relating to properties of the Null-Subject Parameter (e.g. Chomsky, 1981;. Rizzi, 1982). We compare these ...