Home > Soul > 12. Standstill by Standing Waves



Figure 12a. An ideal wave.

A wave is characterized by two parameters: frequency and amplitude. Frequency equals to the inverse of an oscillation period (Figure 12a). Its unit is hertz (Hz); 1 Hz = 1/second. Amplitude refers to the maximum change of the oscillation. Its unit depends on the actual oscillation system.


Figure 12b. A standing wave. The blue wave moves toward right while the red wave moves in opposite direction. The combined wave (black) is a standing wave which does not propagate. [Source: Wikipedia]

A standing wave is formed by the superposition of two waves with the same frequency and amplitude, but moving in opposite directions (Figure 12b). It does not go anywhere. Hence, the key to hold gravitational (GR) waves in a confined region is to form standing waves. In a brain, as ions pass through a channel, they will radiate GR waves in all directions. If two neurons fire synchronously, the GR waves generated by one neuron may form standing waves with those generated by another neuron. The brain is approximately a sphere, which allows for the formation of numerous standing waves during synchronized neuronal firing in the cerebral cortex (Figure 12c).


Figure 12c. The GR waves (arrows) generated by synchronized neuronal firing in the cerebral cortex may form numerous standing waves to create a gravitational geon. The thalamus, located at the center of the brain, is a major source of the cortical activities through thalamocortical pathways.

Since free GR waves travel at the speed of light, the GR waves generated by non-synchronous neurons may not form standing waves. This explains the importance of neural synchrony in creating a geon. Synchronization also facilitates constructive interference, which is crucial for the mutual attraction of GR waves (next chapter).