The target inter-press interval was 500 ms in one task and 800 ms in the other.
In the fast press schedules we introduced a covert minimum frequency target, defined by the inverse of three consecutive inter-press intervals (3 IPIs, 4 presses), which increased across sessions from 0 Hz to a maximum of 4.5 Hz.
On the following training sessions animals were reinforced if they performed a sequence of consecutive presses at a minimum frequency (covert target), defined by the inverse of three consecutive inter-press intervals (IPIs), which increased with training.
(A ) Schematic of the training protocol, starting with magazine habituation and CRF training in the first 2 days, followed by 3 days of the fast press schedules (S1 S9) where we introduce an increasingly higher covert target, defined as the inverse of the sum of three consecutive inter-press intervals (IPIs).
The robust optimization of the upper beam in a high-speed press with interval material properties demonstrated the applicability and effectiveness of the proposed method in engineering.
The robust optimization of the upper beam in a high-speed press with interval material density and elastic modulus demonstrated the feasibility and validity of the proposed method in engineering practice.
The Cherries continued to press after the interval and, having blazed a great chance wide moments before, Wilson showed great composure to score his second and put the visitors in complete control.
St Johnstone continued to press after the interval, with Dave McKay seeing his shot deflected off target after a enterprising surge forward, Adams heading narrowly wide and Sheridan blazing a great opportunity high over the crossbar.
While the process took place, in the course of the next three days, Gossage moved between the library and the press, spending abbreviated intervals in his bed at the Halftone Hotel the kind of half-active, half-inactive twilight familiar to the parents of a newborn.
Motherwell pressed as the interval approached but Lionel Ainsworth's effort was high over the crossbar.
The hosts pressed after the interval with Luke James going close but his long-range drive was tipped over.
