<p>Lambda is a triangular shaped wave at the occipital leads that represents visual tracking. It’s a visual, event related potential that has to do with visual searching—it is like an “aha” when you see something. Lambda is called lambdoid or lambdotal if your eyes are closed.&nbsp; You can see repeated sharp transients in the back of the head in an adult that is reading or watching a movie. If a person is put on a task reading and you see theta or higher frequency delta in the back of the head, do not interpret it as a problem, because it might be a lambda wave form showing up. Lambda waves are found mostly in patients 6 months to 10 years.&nbsp;&nbsp;</p><p style="text-align: center;"><img src="@@PLUGINFILE@@/lambda-movie.png" alt="Figure : Lambda in a client watching a movie" width="764" height="515" role="presentation" class="img-responsive atto_image_button_middle" style="font-size: 1rem;"></p><p style="text-align: center;"><span style="font-size: 1rem;">Figure : Lambda in a client watching a movie</span></p><p style="text-align: center;"><span style="font-size: 1rem;"><br></span></p><p style="text-align: center;"><span style="font-size: 1rem;"><img src="@@PLUGINFILE@@/lambda-qeeg.png" alt="Lambda in a qEEG" width="705" height="480" class="img-responsive atto_image_button_text-bottom"><br></span></p><p style="text-align: center;"><span style="">Figure : Lambda in a qEEG<br></span></p><p style="text-align: center;"><span style=""><br></span></p><p style="text-align: center;"><span style=""><br></span></p><p></p>