The phrase "a total trial" is correct and usable in written English.
It can be used to describe an experience or situation that is completely challenging or difficult, often in a frustrating way.
Example: "The last few weeks have been a total trial, with endless deadlines and unexpected issues cropping up."
Alternatives: "a complete ordeal" or "an absolute challenge".
The search arrays were displayed for a certain duration (SOA) determined for each subject to obtain 75% correct performance, and then masked to reach a total trial duration of 500 ms. For this experiment the set size was fixed at 4 items, and only the presence or absence of the target varied randomly on each trial.
The result was shown for 2 s, giving a total trial duration of 9 to 13 s.
Then the two alternatives - the solution and one of the distractors - were presented for 2 s, giving a total trial duration of 9 to 13 s.
The possibility of increasing power by following up patients for up to K2 = 8 years, giving a total trial time of up to K = 13 years, was also envisaged.
In each trial, a stimulus was presented for 1040 ms, followed by an inter-stimulus interval of 1060 ms, resulting in a total trial length [also known as stimulus onset asynchrony (SOA)] of 2100 ms. An event-related design was used, with a pseudo-randomized trial in order to increase contrast detection efficiency (Liu 2004).
Words were presented for 500 ms using Presentation software (Neurobehavioral Systems Inc., CA, USA), with a total trial time of 2000 ms and an inter-stimulus interval of 1500 ms. Each of the 5 blocks contained 84 words for a total of 420 unique words.
When reductions in all five trial components were combined in a streamlined pharmaceutical industry design, a 59% reduction in total trial costs resulted.
Pseudorandom presentation continued for a maximum of eight total trials per infant (two per sequence).
Participants performed 1 block of practice trials for all 3 tasks, followed by 4 blocks of 28 trials for a total of 140 trials in the size and contrast tasks and 6 blocks of 28 trials for a total of 196 trials in the orthogonal task.
Typically, 'blank' trials were alternated with stimulus presentation trials and a total of 40 trials comprised one imaging block.
Acquisition trials were divided into 10 blocks of 5 trials for a total of 50 trials.
