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Replicability of cognitive imaging of the cerebral cortex By PET and fMRI: A survey of recent literature.

By Yehouda Harpaz


PET and fMRI are relatively new techniques, which allows imaging of the brain without disturbing it, and they are important tools in clinical treatment and investigation. They are also used for cognitive investigation, by which I mean investigation the working of the healthy brain (Frackowiak et al, 1997). Naturally, the main focus of investigation is the cerebral cortex. In this paper, I survey the recent literature for evidence about the replicability of these studies. The survey covers 125 primary research articles, taken from 21 different journals during the first 10 months of 1997. The main findings are: 1.The data about replicability in cognitive imaging is extremely sparse. 2.The sparse data that does exists is mostly negative, i.e. points to irreplicability. These findings suggest that there is a problem with replicability in cognitive imaging, and an effort is required to resolve it

Topics: Behavioral Neuroscience, Brain Imaging, Cognitive Psychology, Neuroanatomy, Physiological Psychology
Year: 1998
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