<P> Any electrical current generates a magnetic field; neural oscillations induce weak magnetic fields, and in functional magnetoencephalography the current produced can show localised brain function in high resolution . Tractography uses MRI and image analysis to create 3D images of the nerve tracts of the brain . Connectograms give a graphical representation of the neural connections of the brain . </P> <P> Differences in brain structure can be measured in some disorders, notably schizophrenia and dementia . Different biological approaches using imaging have given more insight for example into the disorders of depression and obsessive - compulsive disorder . A key source of information about the function of brain regions is the effects of damage to them . </P> <P> Advances in neuroimaging have enabled objective insights into mental disorders, leading to faster diagnosis, more accurate prognosis, and better monitoring . </P> <P> Bioinformatics is a field of study that includes the creation and advancement of databases, and computational and statistical techniques, that can be used in studies of the human brain, particularly in the areas of gene and protein expression . Bioinformatics and studies in genomics, and functional genomics, generated the need for DNA annotation, a transcriptome technology, identifying genes, and their and location and function . GeneCards is a major database . </P>

Structure and function of human brain in psychology