Habitual cannabis use is associated with impairments in emotional processing; heavy users show impaired accuracy when non-intoxicated (Platt et al., 2010; Hindocha et al., 2014).
Among the evidence for this is that NMDA antagonists can impair accuracy in fixed consecutive number (FCN) tasks.
Because task accuracy was improved during short delay trials, a separate study was performed in which non-predictable distractors were inserted within the DMTS format to impair accuracy.
Further, as it relates to speed and accuracy of cognition, McMorris et al. [3] revealed that acute, intermediate intensity exercise improves speed of response in working memory tasks but impairs accuracy, while no speed-accuracy trade-off was found.
The results indicated that exposure to variable PNS significantly impaired accuracy in the VSD version of the 5C-SRTT and increased premature and timeout responses in the VITI version.
In contrast, for the six AD participants, inverting a face significantly impaired accuracy even in the 0° condition (see Figure 5B).
Follow-up tests on this interaction showed that, while inverting the faces did not impair accuracy for profile views, accuracy was significantly impaired for frontal and three-quarter views (see Figure 3).
In the oldest-old control group, while inverting a face did not impair accuracy for a 0° or a 45° difference, accuracy was significantly impaired when faces were presented at a 90° difference (see Figure 5A).
Disadvantages of NIRS are that it requires specialized equipment and disposable yet costly probes, and tissue fat and edema can produce interference that can impair accuracy.
In experienced cannabis users, THC impairs the recognition of unambiguous (100% emotional intensity) faces displaying fear and anger in a dose-dependent manner (Ballard et al., 2012) and impairs accuracy scores for negative emotional faces only (Bossong et al., 2013).
