Prefrontal cortex

Article Abstract:

The prefrontal cortex is part of the frontal lobe. It is responsible for representational memory, which is the active memory used for completing tasks. Different parts of the prefrontal cortex have specific functions. The dorso-lateral area specializes in memory requiring spatial information, while the ventral areas specialize in memory involving visual memory. These parts of the cortex are extensively interconnected, forming a network used for spatially guided behavior.

Cerebral cortex, Frontal lobes

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Images in neuroscience

Article Abstract:

Accurate anatomical localizations of the brain can be achieved by aligning positron emission tomography (PET) and magnetic resonance imaging scans (MRI). This procedure can be likened to combining photographs of different people to produce an average image. There are three methods for averaging several PET and MRI images to produce a single image. They are the spindle method, the bounding box method and the linear perimeter-anchor morphing method.

Usage, Brain, Magnetic resonance imaging, PET imaging, Positron emission tomography

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Immediate early genes

Article Abstract:

The distribution effects of phencyclidine (PCP) on c-Fos and Zif268 mRNA, both members of the class called immediate early genes (IEG), in rat brain are analyzed through autoradiographs. PCP is found to increase c-Fos mRNA expression in the neocortex and limbic cortex, while conversely suppressing Zif268 mRNA expression. Results add to data on the effects of extracellular stimuli on IEGs.

Gene expression, Neurology, Diagnostic imaging

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