Two conceptions of a cued lever press.

Abstract

<p>(A) A latency <i>τ</i> with which to press the lever is selected in an initial cued state (‘1’), leading to completion of the press <i>τ</i> seconds later (‘2’). (B) A latency <i>τ</i> with which to press the lever is selected in an initial cued state (‘1’), leading to a state of preparedness to press <i>τ</i> seconds later (‘2’). Completion of the press (‘3’) occurs only after a subsequent interval <i>τ</i>_<i>post</i>. After a further inter-trial interval <i>τ</i>_<i>I</i>, the process begins anew.</p