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Tracking but not memory was enhanced by glucose. This finding suggests that, under certain task conditions, glucose administrations does not preferentially enhance memory performance. One mechanism through which glucose acts as a cognition enhancer is through allowing greater allocation of...
The CIC stress-induced impairment of cognitive flexibility may involve dysregulation of 5-HT modulatory function in OFC. Such deficits may thus model relevant symptoms of neuropsychiatric disorders that respond positively to SSRI treatment.
The usefulness and limitations of this model for research on the neuronal mechanisms underlying the cognitive impairments in schizophrenia and for drug-finding efforts are discussed.
Asenapine can ameliorate mPFC lesion-induced impairment in attentional set-shifting, and is associated with a greater activation of the spared neurons in the anterior mPFC. These data suggest that asenapine may benefit impaired cognitive flexibility in disorders such as schizophrenia.
The use of positive modulators of PLA 2 (especially of cPLA 2 and iPLA 2 ) or supplementation with dietary lipid compounds (e.g., arachidonic acid) in combination with cognitive training could be a valuable therapeutic strategy for cognitive enhancement in early-stage AD.
The present study suggests that nicotinic stimulation does not work to enhance perceptual salience of target stimuli (experiment 2), nor does it work through better deployment of preparatory working attention (experiment 1). An alternative explanation that nicotine promotes PM detection by...
Dopamine systems are related to learning in zebrafish; nicotine exposure increases both learning rates and DOPAC levels; and nicotinic antagonist administration blocks nicotine-induced rises in DOPAC concentrations. Rapid cognitive assessment of drugs with zebrafish could serve as a useful...
Overall, these findings further support that the rat ID–ED test in subchronic PCP-treated rats has utility and validity as a preclinical model of the cognitive symptoms of schizophrenia and demonstrates back-translational potential.
Drugs such as modafanil and galantamine are being evaluated, and a number of new drugs are currently in development. Standardized cognitive assessment measures are being developed so studies can be compared more easily. This field is advancing rapidly, but as yet, no widely applicable,...
Despite evidence for cognitive-enhancing effects of sildenafil in animal models, the strategy for treating putative NMDA receptor-mediated memory deficits in schizophrenia with sildenafil 50 and 100 mg was not successful. It is possible that the doses used in this study were not optimal or that...
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