Among the molecules that act as neurotransmitters, we can
think of psychoactive substances that feed the brain's reward system
by flooding the circuit with dopamine. Dopamine is a
neurotransmitter that regulates movement, emotions, cognition,
motivation and feelings of pleasure. The accidental ingestion of
marijuana for the development of the daily exploratory activities of
"Homo sapiens" was not an experience that made the drug illicit, nor
frequently abused. The first Shaman discovered by accident and
chance that the greenish-brown mixture of flowers, stalks, seeds and
dried leaves could be pinched and chopped from the hemp plant. So
his brain began a process of design to ensure the repetition of
activities such as: pleasure or a reward that signifies gratification. The
gratification is obtained by means of brain waves, in the case of our
Hominid "Cannabis sativa" where the main active chemical
substance is delta- 9 - tetrahydrocannabinol (THC)
[ 5 ]
is involved in
the interaction of the four brain waves which are distinguished by
different frequency ranges. These waves, from low to high
frequencies, are called delta (δ), theta (θ), alpha (α), beta (β).
Delta waves are within 0. 5 - 4 Hz, are mainly associated with
deep sleep and may be present in the waking state
Theta waves are within 4 - 8 Hz, appear as a descent of
consciousness into drowsiness, and have been associated with
accessing states of unconsciousness, creative inspiration and
deep meditation
Alpha waves range from 8 - 13 Hz, are associated with a relaxed
consciousness without any attention or concentration
Beta waves are within the range of 14 - 26 Hz, the usual waking
state rhythm of the brain, associated with thought and attention
