The effects are strongest while you are listening to the tones because your brainwaves are synchronized and tuned into the frequency range you desire at that time.  After you've stopped listening the effects can still linger for a while afterwards.  The timescale will vary from person to person and be affected by what you do after you've stopped listening.
PMS: There is a little research that supports the efficacy of brainwave entrainment for PMS symptom reduction in women. Women with long-standing and severe forms of PMS were administered photic stimulations for a series of 3 menstrual cycles. Following the photic stimulation, it was noted that women reported 64% improvement by the second menstrual cycle and 76% improvement after all three cycles.
First discovered by biophysicist Gerald Oster at Mount Sinai Hospital in New York City, Brainwave Therapy sends pure, precisely tuned sound waves of different frequencies to your brain via stereo headphones. In his EEG research, Oster discovered that when different vibrations, or sound frequencies, are delivered to the brain separately through each ear (as with stereo headphones), the two hemispheres of the brain function together to "hear" not the external sound signals, but a third phantom signal. This signal is called a binaural beat, and it pulses at the exact mathematical difference between the two actual tones. For example, a signal of 100 Hz delivered to the left ear, and a signal of 107 Hz delivered to the right creates a binaural beat of 7 Hz that in this case falls into the Alpha range
However, those with ASD are sometimes also diagnosed with ADHD. Although they are different conditions, some of the symptoms can be intertwined, which it appears may be the case with your grandson. So I would start by trying out my tracks for ADHD. You can try those out for free on my YouTube channel and I’ve put them together in a playlist here: The corresponding MP3 versions for those tracks can be found on my site here: I hope that helps.
So how’s that novel coming? Your new song? What about that program you were going to write? Or the website you wanted to build? If your creative project, no matter what it is, isn’t coming along as smoothly or as quickly as you’d hoped, you’re not alone. After a lot of soul-searching, research, and banging my head against the wall, I've learned a lot about creative flow, and I'd like to share these tools, tactics, and insights with you. But back to where we started... It’s not that you didn’t … [Read more...]

Controlled or pre/post studies of the effects of BWE using auditory or visual stimulation were eligible for inclusion, provided pulses of light or tone were delivered at frequencies hypothesised to have a beneficial effect or in line with a protocol addressing clinical outcomes. Studies were required to report clinical or psychological outcomes (measured using standard methods or as deemed appropriate by peer review) and to report statistical analysis. Studies of outcomes such as electroencephalogram (EEG) response or neurotransmitter levels were not eligible. Case studies were excluded.
I typically feel overwhelmed by the numerous things that need to be accomplished, which leaves me feeling anxious and rushed. This particular combo has really helped me to slow down today and not feel so uptight, which sadly, is not easily accomplished. I use other modalities to shift my body into parasympathetic mode, but I can't seem to stay there. This program seems to be helping dampen down triggers that cause my body to shift into sympathetic state inappropriately.

The frequencies embedded into each NeuralSync™ audio integrate three audible tones with a fourth subliminal pulse. This inclusion of both audible and subliminal entrainment engages brainwaves far more efficiently than single protocols such as standard meditation practices, binaural beats or isochronic tones. Because this waveform is also balanced, it compels both sides of the brain into hemispheric synchronization much more easily and effectively than other methods.
Deep relaxation is another major benefit resulting from the brains cortical frequency following response while using brainwave entrainment. As the brain tends to mimic the rate of frequency it is exposed to, thus allowing it to enter into that brainwave state, this helps explain why this technology can produce benefits commonly found with meditation.

Neural oscillations are rhythmic or repetitive electrochemical activity in the brain and central nervous system. Such oscillations can be characterized by their frequency, amplitude and phase. Neural tissue can generate oscillatory activity driven by mechanisms within individual neurons, as well as by interactions between them. They may also adjust frequency to synchronize with the periodic vibration of external acoustic or visual stimuli.[3]