Observational studies of humans show that hormone levels may fluctuate during competitions.
Years passed, additional documentation piled up, and studies of humans began to turn up problems similar to those found in animals.
His model is based on traditional research methods, such as lab work using rats with brain lesions, and studies of humans using a well-known card-playing task, in which players gradually start to lose money; the players in the control group stopped as their earnings diminished, but the psychopaths could focus only on the outcome of the next card choice.
Epidemiological studies of humans have also shown that when one generation experiences a famine, this can increase the risk of metabolic diseases in their grandchildren – an indirect indication of inherited epigenetic changes.
Furthermore, human robot relationships must be understood in the context of use of robots, and based on empirical studies of humans and robots in real settings.
However, limited studies of humans who display sustained tolerance following transplantation have not definitively demonstrated a role for regulatory cells in this process.
In high-resolution fMRI studies of humans, behavioral discrimination and completion tasks designed to approximate pattern separation and pattern completion, respectively, elicit the predicted pattern of activity in the dentate gyrus and CA3/CA1 [17–21].
But epidemiological studies of humans also showed a cancer risk, linking exposure to the chemical with an increased risk of non-Hodgkin's lymphoma.
Searches were restricted to studies of humans.
Additional studies of humans with comparable methodologies and samples are necessary to resolve these apparently discrepant results.
Whereas bilateral lesions of the basal ganglia in rats lead to gross timing impairments [20], studies of humans with unilateral lesions have failed to find a deficit [21].
