Binaural beats are pretty much the #1 tool people use to help them shift. I strongly recommend anyone that uses them to read this post. A lot of people here already know about the gateway project by Bob Monroe. The CIA themselves already confirmed that you can synchronize your hemispheres with binaural beats. Cool, but neuroscientists have also done their own studies with them. They used QEEG as an objective measure of the data they received from participants listening to binaural beats for 30 minutes.

Here is one such study titled "The brain responses to different frequencies of binaural beat sounds on QEEG at cortical level": https://pubmed.ncbi.nlm.nih.gov/26737340/

And here are some noticeable quotes from that study that we need to pay attention to:

this study aims to figure out the brain responses to binaural beat by providing different binaural beat frequencies on 250 carrier tone continuously for 30 minutes to participants and using quantitative electroencephalography (QEEG) to interpret the data. The result shows that different responses appear in different beat frequency. Left hemisphere dominance occur in 3 Hz beat within 15 minutes and 15 Hz beat within 5 minutes. Right hemisphere dominance occurs in 10 Hz beat within 25 minute. 6 Hz beat enhances all area of the brain within 10 minutes. 8 Hz and 25 Hz beats have no clearly responses while 40 Hz beat enhances the responses in frontal lobe. These brain responses can be used for brain modulation application to induce the brain activity in further studies.

The enhancements, hemispheric dominances, and responses (or lack thereof) are what is proven by accurate brain mapping to happen when playing certain beat frequencies for 30 minutes minimum. The good news is we have even more studies done that I'll quote later. Those of you serious in using binaural beats for shifting should consider reading these scientific studies and aligning your binaural beat choices with your beliefs.

If you see via QEEG backed data that 8 hz and 25 hz beats have no clear responses and/or have used these frequencies to little or no results then why would you keep using them? If you think being in a theta state will help you shift easier then it's clear what you should listen to help get you in that state.

More sources of scientific studies done on binaural beats that you should personally take the time to read every sentence of if you're using binaural beats as a shifting tool:

• Brain Responses to a 6-Hz Binaural Beat: Effects on General Theta Rhythm and Frontal Midline Theta Activity. Jirakittayakorn N, Wongsawat Y.Front Neurosci. 2017 Jun 28;11:365. doi: 10.3389/fnins.2017.00365. eCollection 2017.PMID: 28701912 Free PMC article.

This^ one is a great read and it's super detailed with data pictures, materials, etc .

• A comparison of auditory evoked potentials to acoustic beats and to binaural beats.Pratt H, Starr A, Michalewski HJ, Dimitrijevic A, Bleich N, Mittelman N.Hear Res. 2010 Apr;262(1-2):34-44. doi: 10.1016/j.heares.2010.01.013. Epub 2010 Feb 1.PMID: 20123120
• Intracranial electroencephalography power and phase synchronization changes during monaural and binaural beat stimulation.Becher AK, Höhne M, Axmacher N, Chaieb L, Elger CE, Fell J.Eur J Neurosci. 2015 Jan;41(2):254-63. doi: 10.1111/ejn.12760. Epub 2014 Oct 25.PMID: 25345689
• Human cortical responses to slow and fast binaural beats reveal multiple mechanisms of binaural hearing.Ross B, Miyazaki T, Thompson J, Jamali S, Fujioka T.J Neurophysiol. 2014 Oct 15;112(8):1871-84. doi: 10.1152/jn.00224.2014. Epub 2014 Jul 9.PMID: 25008412
• Auditory beat stimulation and its effects on cognition and mood States.Chaieb L, Wilpert EC, Reber TP, Fell J.Front Psychiatry. 2015 May 12;6:70. doi: 10.3389/fpsyt.2015.00070. eCollection 2015.PMID: 26029120 Free PMC article**.** Review.

Here's a bonus search query you can copy and paste to find countless studies done on binaural beats.

site: https://pubmed.ncbi.nlm.nih.gov/ binaural beats