Neurofeedback involves trying to change brain wave activity.
<h3>Brain wave</h3>
The human brain is an intricate organ that baffles many scientists today. One design feature of the human brain is its ability to send signals in the form of brain waves when the mind is ar work or in a state of rest. These brain wave activity are braodly categorized into four types, namely;
- beta waves
- alpha waves
- theta waves
- delta waves
Neurofeedback thus occurs when an attempt is made to change from one of the above brain wave types to another.
You can learn more about brain wave activity here brainly.com/question/14080098
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The statement which describes this phenomenon is; Electrons flow freely into the magnetic field, causing the paper clips to move.
<h3>Metals and the Electromagnetic field</h3>
- Metals are made up of positively charged atoms of elements in which case the outermost orbital of these metal atoms contain electrons revolving round them.
On this note, upon interaction with the electromagnetic field posed by an electromagnet placed nearby, it follows that;
- The Valence electrons flow freely into the magnetic field created by the electromagnet and hence, causes the paperclip to move.
The complete question contains options given are;
Metal paper clips do not attract or repel each other. When an electromagnet is placed nearby, the paper clips can be observed to move toward it. Which statement describes this phenomenon?
- Paper clips turn into permanent magnets after exposure to a magnetic field.
- The electromagnet reacts to the strong force of attraction from paper clips.
- Electrons flow freely into the magnetic field, causing the paper clips to move.
- Magnetic domains within the paper clips align with the magnetic field.
Read more on electromagnets and metal chips;
brainly.com/question/5602221
