An account of the present data in terms of sensitivity to reinforcement amount is consistent with previous data showing that methylphenidate can increase (Heyman, 1992) and that opiates can decrease (Egli, Schaal, Thompson, & Cleary, 1992; Lancaster & Dallery, 1999) sensitivity to reinforcement rate. Although this interpretation is possible, its application to the effects of methylphenidate in the present study is weakened by data reported by Pitts and Febbo (2004). They found that, although effects on estimates of sensitivity to reinforcement amount were somewhat inconsistent across pigeons, methamphetamine tended to decrease, rather than increase, this measure.
Sample text:```Secondly, this effect was shown to be selectively due to CCK2 activation (Ladurelle et al. 1997) through mechanisms involving δ-opioid (Daugé et al. 1999) and D1-dopamine receptors (Ladurelle et al. 1993) that could be blocked by the selective antagonists naltrindole (a δ antagonist), and SCH23,390.```
Sample intent: method
Sample text:```Using the previously validated methodology for measuring mental workload, [20] any response to the vibration stimulus of more than the upper limit of normal (1350 ms) was regarded as evidence of cognitive overload.```
Sample intent: background



Sample text:```The ¬¨¬µ-opioid receptor agonist morphine also induced inhibitory effects in both assays, in accordance with previous reports describing the opiate-mediated inhibition of the BSL evoked in mice by excitatory amino acids and neurokinins (Aanonsen et al. 1987; Takahasi et al. 1987; Wilcox 1988).```
Sample intent: result



Sample text:```The insertion of this time delay is critical because in previous work, it has been shown to allow the development of an inhibitory relationship between the outcome and the stimulus that follows; that is, it allows S1 to predict the absence of subsequent O1 delivery and S2 to predict the absence of subsequent O2 delivery; that is, stimuli trained in such manner exhibit properties (such as retardation) identical to those display by other conditioned inhibitors (Rescorla, 1969; Maier et al., 1976; Delamater et al., 2003).```
Sample intent: method



Sample text:```Pupillometry has been proposed as a simple and sensitive tool to detect subclinical autonomic dysfunction [30,31].```
Sample intent: background



Sample text:```The present observations support and extend earlier contentions that Parkinson patients prefer to adopt a closedloop control mode, adjusting their movements continuously on the basis of available visual information (Flowers 1976).```
Sample intent: result
Sample text:```Quantitative geneticists have documented numerous cases of such interactions (Stuber et al. 1992; Ragot et al. 1995; Cockerham and Zeng 1996; Melchinger et al. 1998).```
Sample intent: method



Sample text:```The results for veridical recall replicated previous results in the literature (Bal-
lardini et al., 2008; McDermott & Watson, 2001), with the average recall of studied words increas-
ing monotonically as SOA increased.```
Sample intent: result



Sample text:```Although the time-constants of the learning window used in this study were much shorter than those reported for hippocampal neurons by Bi and Poo [27] (viz.```
Sample intent: background



Sample text:```The insertion of this time delay is critical because in previous work, it has been shown to allow the development of an inhibitory relationship between the outcome and the stimulus that follows; that is, it allows S1 to predict the absence of subsequent O1 delivery and S2 to predict the absence of subsequent O2 delivery; that is, stimuli trained in such manner exhibit properties (such as retardation) identical to those display by other conditioned inhibitors (Rescorla, 1969; Maier et al., 1976; Delamater et al., 2003).```
Sample intent: method



Sample text:```The ¬¨¬µ-opioid receptor agonist morphine also induced inhibitory effects in both assays, in accordance with previous reports describing the opiate-mediated inhibition of the BSL evoked in mice by excitatory amino acids and neurokinins (Aanonsen et al. 1987; Takahasi et al. 1987; Wilcox 1988).```
Sample intent: result



Sample text:```Third, since we compared the same groups of participants also with respect to basic visuomotor tasks (Huestegge et al. 2009a), we already know that the present cannabis group exhibits deficits in basic oculomotor control.```
Sample intent: method



Sample text:```Secondly, this effect was shown to be selectively due to CCK2 activation (Ladurelle et al. 1997) through mechanisms involving δ-opioid (Daugé et al. 1999) and D1-dopamine receptors (Ladurelle et al. 1993) that could be blocked by the selective antagonists naltrindole (a δ antagonist), and SCH23,390.```
Sample intent: method



Sample text:```Our results confi rm previous studies that reached the same conclusion (Boushey et al 1994; Vermeulen et al 2000; Till et al 2005; Marcucci et al 2005).```
Sample intent: result



Sample text:```The present observations support and extend earlier contentions that Parkinson patients prefer to adopt a closedloop control mode, adjusting their movements continuously on the basis of available visual information (Flowers 1976).```
Sample intent: result



Sample text:```Pupillometry has been proposed as a simple and sensitive tool to detect subclinical autonomic dysfunction [30,31].```
Sample intent: background