What electrical field is created when the human eye looks in the direction of the anterior temporal electrodes?

When the human eye looks in the direction of the anterior temporal electrodes, a positive electrical field is generated due to the orientation of the eyes and the differential potentials associated with eye movements. The eyes contain an electrical dipole; when the gaze shifts, the distribution of electrical activity changes, leading to detectable alterations in the EEG.

The anterior temporal electrodes are positioned to capture this change, and because the electrical signal from the eye movement results in a net positive deflection in electrical potential at these electrodes, a positive field is recorded. This phenomenon is often linked to the concept of "ocular artifact" in EEG readings, highlighting how eye movements can influence the electrical patterns measured on the scalp. Thus, looking towards the anterior temporal electrodes results in a positive field, which is essential for understanding the impact of eye activity on EEG interpretations.