Portal:Neuroscience/Featured picture archive

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This page is an archive of pictures featured on the Neuroscience Portal.

Newest pictures at the top

[edit] Sep 09, 2006

Cajal's drawing of the layers of retina.

A drawing depicting the layers of mammalian retina drawn by the famous neuroanatomist Santiago Ramon y Cajal around 1900 AD.

[edit] Aug 25, 2006

Animation of a series of sections  through a human brain (dorsal to ventral) from an MRI scan.
Animation of a series of sections through a human brain (dorsal to ventral) from an MRI scan.

Magnetic resonance imaging (MRI), is a method used to visualize the inside of living organisms as well as to detect the composition of geological structures. It is primarily used to demonstrate pathological or other physiological alterations of living tissues and is a commonly used form of medical imaging.

[edit] Aug 18, 2006

Diagram of hippocampal regions. DG: Dentate gyrus.
Diagram of hippocampal regions. DG: Dentate gyrus.

Cut in cross section, the hippocampus is a C-shaped structure that resembles a ram's horns. The name Cornu Ammonis (CA) refers to the Egyptian deity Amun, who has the head of a ram. The horned appearance of the hippocampus is caused by cell density differentials and the existence of varying degrees of neuronal fibers.