Glossary F
Glossary F
- fMRI (Functional magnetic resonance imaging) : fMRI or Functional magnetic resonance imaging is the modified version of MRI that measures energies released by hemoglobin molecules in an MRI scan and then determines the brain areas receiving the greatest supply of blood and oxygen; an imaging technique that uses MRI equipment to examine blood flow in a noninvasive, nonradioactive manner. fMRI, moreover, is a method of studying brain activity by using magnetic fields to track blood flow in the brain; non-invasive method of discovering which areas of the brain are active as a subject performs a task by measuring blood flow as an indicator of neuronal activity.
Deutsch: Fokus / Español: Enfoque / Português: Foco / Français: Focalisation / Italiano: Focalizzazione /
Focus is defined as the point in the brain where someone’s epileptic seizures begin.
Focus of expansion (FOE) refers to the point in the flow pattern caused by observer movement in which there is no expansion. The Focus of expansion, according to J. J. Gibson, always remains centered on the observer’s destination.
Focus-execute attention is defined as the ability to respond and pick out the important elements or "figure" of attention from the "ground " or background of external and internal stimulation. Focus-execute attention also implies a measure of concentration or effortful processing.