Glossary Terms  Home

I

Image

A visual description of how one or more quantities vary over space.

Indicators

Experimental factors that have integral values to indicate a qualitative level.

Inflated Brain

A transformation of the cortical sheet into a balloonlike structure, removing gyral and sulcal folds so that activation can be more easily viewed.

Interleaved Slice Acquisition

 The collection of data in an alternating order, so that data is first acquired from the odd-numbered slices and then from the even-numbered slices, to minimize the influence of excitation pulses upon adjacent slices.

Interocular Trauma Test

An intuitive test of significance based on highly visible effects of the experimental manipulation.  It states that data are significant if, when plotted, they hit you between the eyes.

Inverse Problem

The mathematical impossibility of determining the distribution of electrical source within an object based upon the measurement of electrical or magnetic field at the surface of the object.