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Where Do Thoughts Come From?
What Are Thoughts?
Thoughts "emerge" from the claustrum. Imagine that the nervous system does not compute, but recognizes patterns. That imagination is now supported by the most recent scientific findings regarding thoughts. Thoughts are the final pattern recognition firing patterns on a real time “screen,” perceived by conscious awareness. While the impulses of one hundred billion neurons power the nervous system, current research points to a single organ, the claustrum, which acts as a “conductor,” which coordinates the highest cortical levels of the system. Thoughts "emerge into subjective experience" from the combinatorial firing patterns on the claustrum screen.
The mechanisms, which manage autonomous processes are not thoughts. The motor neuron impulses, which enable you to ride a bike, or drive a car are not thoughts. The neural processes, which identify an odor, a pencil on your table, or a word on this page are not thoughts. Nature has hidden numerous such processes from conscious awareness. Thoughts reach conscious awareness. Sensory perceptions, the recognition and recall of significant events, the experience of emotions and perception of the activities of the system, the posing of queries to the mind and perception of the results of mental search processes reach conscious awareness. These are thoughts. Science reports that nature has designed the claustrum to coordinate the outputs of various cortical regions into a single “thought orchestra.”
Where Do Thoughts Come From?
Is There A Ghost In The Machine?
Just like your visual experience of the sunset, the claustrum provides the current real time view of the system to all relevant regions of your brain. The nervous system is structured to recognize both objects like scissors and living intelligences like barking dogs. It recognizes an "I." The "I" has a three dimensional view of the world, makes decisions and experiences life. An accurate geographic locator in the nervous system gives the "I" a physical location - at the focal point of vision. This "I" sits behind our eyes and in front of the back of our heads.
In addition, the nervous system also locates the positions of our arms and legs relative to such an "I." Muscles, tendons, joints, and the inner ear contain proprioceptors, (stretch receptors), that provide this information. The brain concludes that "I" is a physical entity with a mysterious perception of the world. We call that consciousness. But, this consciousness, as experienced by us, is merely a claustrum interpretation of combinatorial codes. "I" recognizes smells through codes. An independent "I," a ghost in the machine, is no more real than an "I" in a thermostat.
Where Do Thoughts Come From?
Where Do Nerve Impulses Become Thoughts?
But, science has managed to capture the
mechanisms at the critical point where nerve impulses become
thoughts. Objects or events in the real world have many attributes,
including color, shape, distance, velocity, smell, sound and feel. A
PET study by Hadjikhani revealed the involvement of the claustrum in
cross-model matching, in tasks that require the simultaneous
evaluation of information from more than one sensory domain. Without
this structure, the subject may still be able to respond to simple,
isolated or to highly familiar stimuli, but not to complex or
unfamiliar ones. The claustrum appears to enable the conscious
experience, where these objects and events are perceived in an
integrated manner and not as isolated attributes. The claustrum
appears to be the region, which is a “dashboard,” which displays
your thoughts.
Where Do Thoughts Come From?
Can Thoughts Be Switched On And Off?
The claustrum has also been linked to the
“switching on” of thoughts. Researchers led by Mohamad Koubeissi
at the George Washington University were using deep brain electrodes
to record signals to identify the originating regions of epileptic
seizures for a patient. When they applied high frequency electrical
impulses to the claustrum for the patient, the subject lost
consciousness. She stopped reading and stared blankly into space. She
failed to respond to auditory or visual commands and her breathing
slowed. As soon as the stimulation stopped, she immediately regained
consciousness with no memory of the event. The stimulation had
inhibited activities in the claustrum and “switched off”
conscious thoughts.
Where Do Thoughts Come From?
Is The Claustrum Strategically Linked?
The claustrum is a thin, irregular,
sheet-like neuronal structure hidden beneath the inner surface of the
neocortex. It has feedback and feedforward links to the prefrontal
cortex, the motor cortex, the cingulate cortex,
the visual cortical regions, the temporal cortices, parietooccipital
and posterior parietal cortex, the frontoparietal operculum,
somatosensory areas, prepiriform olfactory cortex, the hippocampus
and the amygdala. Effectively, the claustrum has access to the “final
reports” from important regions of the mind, which enter conscious
awareness. This implies that specific pipelines carry these
“thoughts reports” to conscious awareness.
Where Do Thoughts Come From?
What Is Combinatorial Coding?
Thought reports are combinatorial
firing patterns in the output pipelines from various neural regions.
In 1999, researchers uncovered combinatorial coding (Nobel Prize
2004), which can transmit virtually infinite volumes of data from the
olfactory region. They found that a particular smell was
recognized, when specific neuron receptor combinations fired. The
olfactory system used an "alphabet" (A to Z) of receptors
to identify a specific smell. Combinations of receptors (ABD, ABP, or
XYZ), fired to indicate different smells. Subtle chemical differences
caused distinct combinations to fire.
By remembering
combinations, the olfactory bulb could use a small number of receptor
types, (A to Z), to identify millions of odors (the infinite
vocabulary of A to Z combinations). Even slight changes in chemical
structure activated different combinations of receptors. Thus,
octanol smelled like oranges, while the similar compound octanoic
acid smelled like sweat. The combinatorial patterns on a television
screen enables us to identify an infinite number of moving images.
Similar firing by a few thousand nerve fibers in the olfactory system
represent the recognition of trillions of odors.
Where Do Thoughts Come From?
How Are Sensory Perceptions Converted To Nerve Signals?
Pattern
recognition enables a hierarchy of neural regions to identify objects
and events at higher and higher levels of complexity. The process
begins when numerous receptors in the body convert sound, light,
taste, smell and touch into biochemical and electrical signals.
Typically, when an odorant molecule locks on to an odor receptor,
calcium channels in the membranes of the nerves open and calcium ions
pour inside, generating the electrical charge of a nerve signal. Such
signals are carried by peripheral nerves to the central nervous
system.
Chemoreceptors in the tongue report taste. Other
receptors are massed together to form sense organs such as the eye
and the ear. Chemicals from damaged tissue cause nociceptors to fire
and report pain. Their signals are routed to the primary areas of
the cortex. The signals then flow to the secondary areas, which
integrate the signal combinations from the other half of the body.
Such integration handles binocular vision and stereophonic sound. The
combined signals travel to the association regions, which identify
objects and events.
Where Do Thoughts Come From?
How Are Combinatorial Signals Recognized?
The combinatorial messages from
the somesthetic association region enable you to consciously
recognize a pair of scissors by its feel, with your eyes closed. If
this region is damaged, you will be able to feel the scissors, but
you will not be able identify it. The brain has many specialized
regions, which integrate information. As an example, a visual region
integrates the multiple views of a rabbit behind a picket fence into
the perception of a single rabbit, when those “slices of the
rabbit” appear to move in unison. Just as the olfactory region
identifies odors, this region visually integrates moving objects.
Where Do Thoughts Come From?
Do Motor Controls Become Thoughts?
Lower level pattern recognition processes, which identify an
odor, or a word on a page are not thoughts. Many processes of the
body, including unconscious body movements and digestive processes
are not thoughts. The activities of the nervous system, which manage
motor control do not fire in the claustrum. The person is said to
carry on in his stride, without a thought. Riding a cycle, or the
intention to steer the bike does not by itself produce thoughts. But
proprioceptive regions report on the position and movement of limbs.
You can have thoughts about your posture or of the ideal strokes in
tennis, or golf.
Where Do Thoughts Come From?
Does Inhibition Assist Recognition?
The recognition of sensory patterns bring
information in one group of pipelines to the claustrum. There are
other pipelines to the region from functional brain regions,
including event recognition and emotions. Thoughts occur at the
highest “dashboard” level, where the claustrum inhibit those
patterns, which are not contextually logical to create a rationalized
whole. The claustrum may inhibit conflicting viewpoints, which do not
match the final objects or events recognized by the system. At this
level, the global perceptions of the system are integrated into
conscious thoughts.
Where Do Thoughts Come From?
Is There Anything Combinatorial Codes Cannot Represent?
Thoughts can represent an idea,
notion, line of thinking, belief, concept, conception, conviction,
opinion, view, impression, image, perception, mental picture;
assumption, presumption, hypothesis, theory, supposition,
postulation, abstraction, apprehension, understanding,
conceptualization; feeling, funny feeling, suspicion, sneaking
suspicion, hunch. On seeing a person, the mind brings contextual
information into the claustrum. A thought occurs that the person is
immensely rich. These are higher level pattern recognition results.
Where Do Thoughts Come From?
What Are Mirror Neurons?
Thoughts can be an awareness of the
feelings of others. Pattern recognition enables you to experience
the feelings of other people. The mirror neuron circuits enables the
brain to identify the activities of others and then to fire the nerve
signals required to experience similar feelings. These neurons
operate within the anterior insula and the inferior frontal cortex.
Researchers noted that specific neurons in this region fire when a
monkey reaches for a peanut, pulls a lever, or pushes a door.
Iaccomo Rizzolati discovered that neurons in the same regions also
fire, when the monkey watches another monkey perform similar actions.
Mirror neurons fire pain signals when a subject observes another
person being pricked by a needle. To create conscious awareness,
these circuits also fire at the claustrum level.
Where Do Thoughts Come From?
How Does Despair Work?
Thoughts trigger behaviors and emotions
at the highest level of pattern recognition. When the natural
curiosity of your mind fails to discover the goal of your current
activity, a sense of frustration enters yor thoughts. When the same
curiosity fails to discover your role in the grand purpose of the
cosmos, the heightened frustration creates despair and
dissatisfaction. An existential despair intensifies the ongoing
dissatisfaction with the petty successes of one's pointless life.
This state of the nervous system uses every context to dump negative
perceptions into your thoughts.
Where Do Thoughts Come From?
How Does The Nervous System Make You Shy?
A thought can make a person
feel breathless. It can fill her with anticipation, or fear. If you
are a shy person, apprehension tenses your body and recalls memories
of your past failures in social gatherings. Your mirror neurons
identify the thoughts of others. They absorb their facial
expressions of hostility, pity, or contempt. Lacking “small
talk,” you feel tongue tied and awkward and fear being a “wet
blanket.” Your system responds by freezing. In the meanwhile,
your rational prefrontal brain sends requests. “Say something.
Anything!” A feeling of desperation enters your thoughts.
Where Do Thoughts Come From?
What Triggers Jealousy & Envy?
The emotions of envy and jealousy are not conscious thoughts.
They are triggered through the recognition of the patterns of human
behavior. The prospect of failure in achieving a desired goal
triggers jealousy. Career growth, a partner's love, or a mother's
undivided attention are usually the threatened goals. Jealousy brings
painful thoughts of the competitor's actions. Envy originates from
regret, leading to anger, over one's powerlessness to get an alluring
asset owned by a perceived equal. Envy triggers angry thoughts.
Where Do Thoughts Come From?
How Is Sadness Triggered?
Sadness is an emotion, a sense of irreparable loss, which is
strengthened by thoughts of “what might have been.” A major
disappointment make a person abandon his dreams and ambitions. The
system considers such thoughts impossible and inhibits them. Such
thought patterns then stop firing in the claustrum. The thoughts are
abandoned. When a person faces a crisis and fear signals from the
amygdala send many disturbing thought patterns to the claustrum,
making the person feel “awful.”
Where Do Thoughts Come From?
How Does Attention Work?
The act of paying attention brings
information to the claustrum. Maunsell had studied neural signals
in the visual area of the cortex of monkeys, when viewing a swarm of
dots on a computer screen. He was able to correlate the firing of
specific neurons, with recognition of the movement of specific dots.
The focus of attention is a PFR activity. When the animal focused on
just one of the dots, the directed attention caused the neurons that
signaled its motion to fire more strongly. At the same time, neural
signals related to other dots were attenuated. Evidently, the
stronger signals in the claustrum brought the view of a particular
dot into the conscious awareness of the monkey. The act of paying
attention produces a conscious thought. Just pay attention to your
toe and you can sense the movement of your toe.
Where Do Thoughts Come From?
How Does Meditation Work?
When you pay
attention to your feelings and sensations, the patterns in the
claustrum reflect them. Conscious awareness also stills unrelated
neural activity. Self awareness is the process of paying attention
to your feelings and sensations. The intense activity in the
amygdalae, which causes painful emotional thoughts can be reduced
through attention. Columbia University researchers observed that
when fear stimuli was perceived consciously, the pre frontal regions
acted to dampen down amygdalae activity. Self awareness acts to shut
down needless distress and still thoughts. In meditation, a person
keeps reciting a single word for long periods. In this case, mental
activity reduces and several parallel lines of vague and distressing
thoughts stop firing in the claustrum. The person achieves a sense
of peace.
Where Do Thoughts Come From?
How Do Thoughts Assist Creativity?
On facing a problem, the prefrontal regions and
the limbic system search for solutions. The claustrum reflects
patterns concerning possible courses of action as well as the
troubling results of actions which could lead only to more problems.
The person may decide to sleep on a problem and later, the brain
discovers a solution and the claustrum reflects the “Aha” feeling
of discovering a solution. As a person mulls over a design problem,
the brain discovers a solution and it pops into view in the
claustrum.