Question

Which of the following does not typically cause an attenuation of the posterior dominant alpha rhythm in the normal adult?

1) Eye opening
2) Mental activity
3) Hyperventilation
4) Photostimulation

Answer 1

The posterior dominant alpha rhythm in a normal adult is typically not attenuated by eye opening.

Step-by-step explanation:

The posterior dominant alpha rhythm refers to the dominant brainwave frequency that is typically observed in the posterior regions of the brain in a normal adult. Attenuation refers to a decrease in the strength or amplitude of this rhythm. In a normal adult, all of the options provided can cause an attenuation of the posterior dominant alpha rhythm except for 1) Eye opening. Eye opening typically leads to an increase in brainwave activity, including the alpha rhythm, rather than a decrease.