On a small fraction of trials (∼0.13) animals broke fixation during the decision period of the task without making a choice (fixation break trials).
Patients also had additional, predominantly left-sided, reductions in source activity in the decision phase of the task, 550 650 ms (Fig. 3B).
In particular, the frontotemporal deficits during the decision phase of the task (550 650 ms) are in contrast with normal early visual cortical sources 30 120 ms after presentation of stimuli.
Therefore we focused on two post-decision periods of the task, one right after the decision ('post-saccade', 0 400 ms after saccade onset, median saccade onset 309 ms) and another when the correctness of the decision was revealed at 800 ms after the decision onset ('reward', 0 600 ms after reward onset).
We found that many neurons (71 out of 155, 46%, Figure 2B, top) showed significantly different activity between the fixation period and at least one of the post-decision periods of the task (bootstrap test, p < 0.01).
The aim of this study is to introduce the concept of Shannon entropy in decision making paradigms as a decision uncertainty descriptor of the task and to map the functional fingerprint of such uncertainty using an economic decision task under different configurations of probability and time.
"I think in light of the Enron situation, there's an even greater reason for the administration to want to come clean and talk about Enron, among other special interests, that influenced the decisions of the energy task force".
Dr. Robert V. Brody, chairman of the ethics committee at San Francisco General Hospital, where the policy ultimately favors the doctor's decision, says the task of performing CPR usually falls to the younger resident staff at a hospital rather than to an attending physician.
Middle frontal gyrus activation was seen in the respond but not the count condition suggesting that this region is associated with action execution rather than the decision-making aspect of the task.
The purpose of the concrete or abstract word categorization task was to vary the trial-to-trial decision-level difficulty of the task.
