AFNI (Analysis of Functional NeuroImaging) is an environment for processing and displaying functional MRI data - a technique for mapping human brain activity. It was designed and written at MCW, largely by Robert W. Cox, starting in 1994. AFNI runs under Unix+X11+MOTIF systems, including SGI and Linux. It now comprises over 100,000 lines of C source code, and its capabilities are continually being extended. In addition, a skilled C programmer can add interactive and batch functions to AFNI with relative ease. Functional Magnetic Resonance Imaging (or fMRI) describes the use of MRI to measure hemodynamic signals related to neural activity in the brain or spinal cord of humans or other animals. ... Wikibooks has more about this subject: Guide to UNIX Unix or UNIX is a computer operating system originally developed in the 1960s and 1970s by a group of AT&T Bell Labs employees including Ken Thompson, Dennis Ritchie, and Douglas McIlroy. ... In computing, the X Window System (commonly X11 or X) is a windowing system for bitmap displays. ... In literature, a motif is any recurring element that has symbolic significance. ... Tux is the official Linux mascot. ...

AFNI refers both to the interactive program of that name, and to the entire software package. The basic unit of data storage is the "3D dataset", which consists of one or more 3D arrays of voxel values (bytes, shorts, floats, or complex numbers), plus some control information stored in a header file. In computer programming, an array, also known as a vector or list, is one of the simplest data structures. ... A voxel (a portmanteau of the words volumetric and pixel) is a volume element, representing a value in three dimensional space. ...

See also

Statistical parametric mapping Statistical parametric mapping or SPM is a statistical technique for examining differences in brain activity recorded during functional neuroimaging experiments using brain imaging technologies such as fMRI or PET. It may also refer to a specific piece of software created by the Wellcome Department of Imaging Neuroscience (part of University...

External links

AFNI main page