Using the quantification of the Fos protein as an indicator of neuronal activation, we studied the involvement of the rostral thalamic nuclei and associated structures in different spatial memory tasks in two experiments. In both experiments, tasks were matched for sensorimotor factors but differed in their spatial and mnemonic demands. In Experiment 1, matched groups of rats either ran in a st...

Rats experienced a spatial pattern of baited and unbaited arms in an eight-arm radial maze. The spatial pattern remained constant over trials, but the spatial locations that were baited varied unpredictably. Although there was no evidence of control by the spatial pattern during free choice training trials, the rats' ability to locate baited arms in forced choice test trials was superior to tha...

The performance in a radial-arm maze of two groups of rats with restricted access to extra-maze visual cues was studied. One group received extensive exposure to the visual environment of the maze, whereas the second group was never exposed to the environment, aside from their experience in the maze itself. Spatial exposure resulted in a slightly improved ability to discriminate between previou...

Nepeta L. (Lamiaceae) species are belonging to aromatic and medicinal plants. Many biological activities of have been reported. In this study, memory-enhancing nuda ssp. essential oil was aimed be evaluated in laboratory rats treated with scopolamine. GC-MS/GC-FID system used identify composition. Memory performances the were tested using Y-maze radial-arm maze. Acetylcholinesterase enzyme acti...