Saturday, October 18, 2008
Prerequisite II for Surviving a Conference: Understanding Basic States of Consciousness
We experience the very same states of consciousness that hypnosis induces purposely quite spontaneously all throughout the day. Hypnosis takes place at about 8 - 12 cycles per second/Hertz or lower on EEG (an observing of the electrical patterns generated by the brain), and critical thought generates a faster oscillation, usually ranging from 15 to about 25 Hz. These states of consciousness can be objectively assessed through a psychological assessment (both through observation and self-reported interview) though we can observe these same states through physical responses as well. The names of the Hz range that correspond to these characteristics are used to describe the corresponding states of consciousness, though I will only mention those that are pertinent to hypnosis.
Different brain structures generate different frequencies and patterns, and during normal consciousness, there is an ideal balance of these different brain wave patterns taking place all at once. But it makes sense that if the problem-solving centers of the brain that generate a particular waveform are not being utilized heavily, there will be an overall decrease in those patterns. So this description of consciousness based on one wave form describes the predominant and general, overall pattern described. (For example, some very logical, left-brained people will generate beta waves all throughout their sleep cycle when those patterns are nearly absent during sleep for the general population.) Waking hypnosis can then take place during normal consciousness, even though a person might not be in a completely relaxed state, the general state that allows for the bypassing of critical thought to introduce focused, selective thought. It may also tend to occur when the oscillations of the brain wave patterns vary just between critical thought and a state relaxed alertness at approximately 12 - 15 Hz, at the Beta-Alpha Border.
When engaged in critical thinking, discernment and decision-making, the brain generates a predominant pattern of Beta waves, generally ranging from no lower than 12 Hz, though they can speed along as fast as 40 Hz. (Certain, specialized motor tasks and pathologic conditions can cause up to 100 Hz, but this is not typical.) Logic and sequential thought as well as stress correspond with the beta state, and it is most easily noted by cool or cold hand temperature and muscle tension. Headache patients benefit by learning to control this tension, using hand temperature as a gauge and a focus to slow these thought patterns as high beta states often accompany headache and migraine.
A comfortable, relaxed posture accompanied by a mental state of relaxed awareness/alertness characterizes the Alpha state of consciousness on EEG. (It ranges from approximately 8 to 12 Hz.) Selective attention typifies this state, when engaged in a task that causes a person to loose track of the passage of time. This generally the state that one experiences when one is sitting restfully or doing something that one finds relaxing (which can include sports that one finds calming). Learning takes place at this state, and it is ideal for memorization. (Classical education capitalizes upon the enhanced ability to memorize associated with this state, as this is the general state of children until about 8-10 years of age when beta waves begin to develop.) Hypnotherapy seeks to induce an Alpha state so as to more easily refocus attention (or introduce new information), and it is also an ideal state of mind for reading comprehension. The brain absorbs and stores information uncritically in this state of consciousness.
The body will shift into an alpha state in response to certain physiologic factors: eye movement and deep, rhythmic breathing. Note that when a person’s gaze is directed to 30 degrees above midline or when a person breathes deeply from the abdomen, the body cannot resist shifting into an alpha state of consciousness. This is a physiologic response to gazing upward (to see a speaker or to view a projection on a display screen).
Theta, just a little slower than the Alpha state (4 - 8 Hz), corresponds to intuition and daydreaming, and it is often experienced while doing repetitive tasks. Have you ever been unable to remember a name to have that name pop into your mind hours later? Or have you been driving on the highway to arrive at your destination to realize that you don’t actually remember making the drive? You’ve likely shifted into a Theta state. This is the state of consciousness that enhances creativity.
Many people find that they have ideas come to them “out of the blue” and will have their most creative thoughts while doing repetitive, rhythmic tasks like driving on the highway or while vacuuming. Automatic tasks induce a theta state and may bring with them a flood of ideas. Because people report seeing cool, blue and teal colors (reporting thoughts perceived in association with these colors) while in this state of consciousness, I am told that this explains the “out of the blue” cliche. This state of consciousness sometimes enhances certain aspects of hypnosis but is not the most desired state of consciousness for post-hypnotic suggestion.
Why is any of this important?
Our activities determine our states of consciousness, but it is critical to note that conditions in our environment and certain stimuli and activities can enhance our tendency toward one state or another. If you are in a situation when you need all of your “Beta” functions, anything that causes a natural, physiologic slowing of these brain wave patterns will make you vulnerable. Florescent lighting slows brain wave patterns as do the radiant light patterns of a television screen. If you know that you are going into a situation where you find yourself at a disadvantage, you might wish to do things to keep your Beta functions active and engaged. You can accomplish this through self awareness and through knowledge of how these states of consciousness can work against you. Recognizing the characteristics of each state can help bring you back into healthy balance and a state of mind that is most appropriate for your circumstances.
For instance, if you are a Christian and you sit down to debate with a person of a very different faith about these matters, you would definitely not want to slip into a state of consciousness that made you prone to accepting ideas without discernment. People with problems like ADD tend to fall into a particular brainwave pattern mix, so this is of interest to them if they wish to improve their attention by avoiding any environmental factors that work against them.
Read more HERE about factors that promote alpha and theta activity, especially when attending a conference.
Single brainwave formation graphics noted above:
An EEG (electroencephalograph) 1 second sample. The signal is filtered to present only the brain wave patterns of interest. The signal was acquired in the Oz position processed with scipy and saved with matplolib. Created by Hugo Gamboa Dec 2005
Comparison graphic by Intelegen, Inc.