<p>The appearance of alpha at the temporal leads is most easily seen in a Laplacian montage. “Excess Temporal Lobe Alpha” (TLA) classification is used when evidence exists that the temporal lobe generates abnormal amounts of alpha. TLA suggests frontal lobe disengagement which results in temporal lobe idling and suggests an affective perceptual problem, prosodic comprehension difficulty, and even a deficit in spatial reasoning.&nbsp;</p><p>It is important to accurately determine the source of the alpha and to rule out alpha contamination from posterior regions. Alpha contamination occurs when occipital and parietal alpha spreads into EEG sensors placed in the temporal lobe region, creating the illusion of temporal lobe and frontal lobe alpha (due to ear reference contamination) (Hammond &amp; Gunkelman, 2001).&nbsp;</p>