Meditation Music Psychoacoustics and Brainwave Entrainment 5

Question 1

Which brainwave state is specifically targeted by 40 Hz (gamma) binaural beats in current Alzheimer's disease research?

Accepted Answer

Stimulating gamma oscillations to enhance glymphatic clearance and immune response

Answer

MIT research found that 40 Hz sensory (gamma) stimulation promotes glymphatic activity and microglial response that may reduce amyloid and tau pathology in mouse models.

Question 2

What is 'monaural beats' and how do they differ from binaural beats?

Accepted Answer

Monaural beats are produced by mixing two frequencies in the same channel before reaching the ear; binaural beats are mixed inside the brain

Answer

Monaural beats are created acoustically when two slightly different frequencies are mixed into the same audio channel, while binaural beats are a neural phenomenon requiring separate ear delivery.

Question 3

The psychoacoustic concept of 'auditory scene analysis' (Bregman) is relevant to meditation music because:

Accepted Answer

It describes how the brain groups acoustic elements into coherent streams, affecting how layered soundscapes are experienced

Answer

Auditory scene analysis explains how listeners parse complex mixes into distinct perceptual objects, which composers use to design meditation soundscapes that feel immersive rather than cluttered.

Question 4

Why do many meditation music producers use a sample rate of 96 kHz or 192 kHz even though human hearing tops out near 20 kHz?

Accepted Answer

To reduce aliasing artifacts and preserve intermodulation products that may affect the perceived smoothness of audio

Answer

Higher sample rates reduce high-frequency aliasing and intermodulation distortion, which some researchers argue affects the subtlety and perceived smoothness of audio even below 20 kHz.

Question 5

Which term describes the tendency for the brain to organize a rapid sequence of alternating high and low tones into two separate melodic streams rather than one?

Accepted Answer

Auditory streaming or stream segregation

Answer

Auditory streaming (stream segregation) occurs when the brain splits rapid alternating tones into perceptually distinct streams based on frequency proximity and timing.

Meditation Music Practice Test

Meditation Music Practice Test

Meditation Music Psychoacoustics and Brainwave Entrainment 5