<p>When someone has two separate alpha peak frequencies you see fusiform alpha. Fusiform alpha is a beat frequency that is the blending of two separate frequencies. This mixing of frequencies will give you an interesting morphology that looks monomorphic, or one shape. Two alpha peaks has been pbserved within my own clinic as a marker of depression or tendencies of low mood and affective disorders.<br></p><p style="text-align: center;"><img src="@@PLUGINFILE@@/spectra-dual-alpha-peaks.png" alt="Spectra of Dual Alpha Peaks" width="629" height="548" class="img-responsive atto_image_button_middle"><br></p><p style="text-align: center;">Figure : Spectra of Dual Alpha Peaks<br></p><p style="text-align: center;"><br></p><p style="text-align: center;"><img src="@@PLUGINFILE@@/raw-eeg-fusiform.png" alt="Raw EEG of Fusiform Alpha (Eyes Closed)" width="415" height="835" class="img-responsive atto_image_button_text-bottom"><br></p><p style="text-align: center;">Figure : Raw EEG of Fusiform Alpha (Eyes Closed)<br></p><p style="text-align: center;"><br></p><p>Alpha rhythm often comes on when someone closes their eyes; the clinicians should be able to get a reliable alpha reading in 20-30 seconds. Fast alpha (above 11 hz) correlates with good semantic and declarative memory performance). It is not linearlly related to IQ, but is a component of it.&nbsp;</p><p>The quickening of someone’s alpha has been thought of as brain brightening. This enhances memory and semantics. Alpha is your sampling rate. If we see 10 peaks per second, you have 10 hz alpha. You have a higher resolution if you have faster alpha. You have crisper, sharper peceptions if you have fast alpha. The alpha rhythm is considered to be made up of two separate functional components.&nbsp; Low alpha band (8-10 Hz): associated with general or global attention, and high alpha band (10-13 Hz): reflecting directed or task specific attention.&nbsp;&nbsp;</p><p>Both Sterman et al. (1996) and Klimesch et al. (1993) found that individuals with good (versus poor) memories have stronger desynchronization in the lower alpha band during the encoding and retrieval of memory.&nbsp; Crawford et al. (1995) found more lower band alpha power in subjects whose attention was more distractible.&nbsp; When sleep deprivation occurs, it has been found to mostly affect low alpha (and theta), negatively influencing general attention (Sterman, 1999) so that excitation is blunted and the frequent return to an inattentive idling state (Hammond, 2018).&nbsp;</p>