NEUROPSYCHOPHYSIOLOGY OF ADULTHOOD
Cutting-edge knowledge in physiology, neuropsychology, neuroanatomy, and brain function. Functional neurology
Neuropsychophysiological Model: From DNA to Behavior Brain. Body. Soul.
From genes to decisions: how the adult brain works and why behavior is more than just willpower. Every adult faces questions like:
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Why do I get tired faster than others?
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Why do I have trouble concentrating?
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Why do I put off important things or take it out on my loved ones?
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Why don't advice like "just start" or "you have to be motivated" help me?
We often think it's all a matter of willpower, self-control, or discipline. But in reality, our mood, behavior, ability to learn, build relationships, achieve goals, and recover from stress are the result of a multilayered biological system.
This system begins with DNA, continues in brain chemistry, its electrical rhythms, the maturity of sensory systems, and culminates in how we perceive ourselves, others, and act in the world. What we call "character" or "habits" very often reflects deep processes in the body and brain that extend from childhood.
In this course, we'll uncover a model where every level from genetics to behavior, influences how we live, love, learn, work, and recover. We'll see that symptoms like anxiety, fatigue, procrastination, short temper, or "emotional instability" aren't weaknesses, but rather signals of an imbalance at one of the biological levels. This diagram reveals a powerful model of how brain function and behavior are shaped by multiple levels of the body: genetics, cells, and brain networks. We'll examine each stage in detail to understand the relationship between phenotype and physiology.
Level
DNA / RNA / Proteins
What's happening: The foundation is being built.
The most fundamental mechanisms operate at this level: DNA (the genetic code we receive from our parents) contains the instructions for all bodily functions, RNA carries these instructions, and proteins do the work—building tissue, transmitting signals, and regulating cellular life. These processes lay the foundation for how brain cells will develop and interact. DNA is like a recipe book, and RNA reads and delivers these recipes to create proteins. Proteins perform the bulk of the work in cells—building structures, transmitting signals, and so on.
Disturbances at this level can be congenital or caused by external factors (environment, nutrition, alcohol, stress). Even if genes are "normal," their activity can be disrupted—this is called epigenetics. For example, chronic stress can shut down genes needed for emotion regulation.
What interventions are possible:
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Nutrition: Omega-3, B vitamins, zinc, magnesium - all of this is necessary for the synthesis of neurotransmitters and the correct functioning of proteins.
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Sleep: During sleep, genes responsible for tissue repair and regulation of the immune and nervous systems are activated.
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Epigenetic support: stress reduction, safe environment, body practices, reduction of toxic load (heavy metals, excess sugar).
If the body does not receive the necessary substances, or if genes are influenced by harmful factors, brain development and the process of maturation and aging follow a distorted trajectory from the very beginning.
Level
Pathways and Synapses
What is happening
At this level, chemical messengers neurotransmitters such as dopamine, serotonin, norepinephrine, glutamate, and GABA are at work. They transmit signals between neurons through synapses. The balance and activity of these substances determine how effectively the brain regulates excitation and inhibition, attention, motivation, mood, and behavior.
Even when brain structures are intact, disruptions in chemical signaling (for example, dopamine deficiency or imbalance between GABA and glutamate) can lead to dysregulation of attention, increased anxiety, impulsivity, and mood instability. These patterns are commonly observed in ADHD, autism, depression, and anxiety disorders.
Possible interventions
Neurotransmitter metabolite testing (urine or blood):
This laboratory analysis measures the breakdown products of neurotransmitters (such as dopamine, serotonin, norepinephrine, and GABA). It provides insight into the brain’s biochemical “status,” indicating whether there is an excess, deficiency, or disruption in the metabolism of these key signaling molecules.
These substances play a critical role in regulating mood, motivation, sleep, stress response, and attention. This testing provides an objective picture beyond observations and subjective reports. It supports personalized interventions by helping to select appropriate amino acids, vitamins, dietary strategies, or psychotherapeutic approaches. It also allows tracking of treatment effectiveness and reduces trial-and-error in selecting medications or nutraceuticals.
Based on the results, the following interventions may be applied:
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Amino acids (tyrosine, tryptophan, 5-HTP) — building blocks of neurotransmitters
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Vitamins and minerals (B6, magnesium, zinc, omega-3)
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Dietary adjustments (e.g., higher protein intake in the morning, reduced sugar and caffeine)
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Psycho-emotional practices (breathing techniques, somatic therapy)
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Neurofeedback or HRV training (if signs of dysregulation are identified)
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Physical activity: aerobic exercise supports the release of dopamine and serotonin
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Pharmacotherapy (when indicated): stimulants, antidepressants, or anxiolytics — strictly prescribed by a qualified physician
Neurotransmitters can be thought of as the brain’s “electrical switches.” When they are not working in balance, signals may either become lost or overloaded. Optimizing this level helps the brain return to stable, flexible, and efficient functioning.
Level
Networks and Network Structures of the Brain
What's happening:
Sensory integration is the process by which the brain collects, organizes, and interprets signals from the senses: vision, hearing, touch, balance (vestibular system), depth perception (proprioception), interoception, and others. It is the basis for spatial orientation, safety, and the ability to regulate.
If an adult is not processing sensory information correctly (for example, being hypersensitive to sounds or having no awareness of their own body in space), they will be constantly stressed. Their behavior may appear disobedient, when in fact it is a response to sensory overload or disorientation.
What interventions are possible:
Sensory Integration Therapy (SI therapy): helps the brain learn to process sensory signals correctly. Specific exercises, swings, balls, tunnels, etc. are used.
Movement therapy: yoga, neuromotor therapy, balance exercises that develop the vestibular and proprioceptive systems.
Integration of primary reflexes: Many perception problems are related to the fact that the child’s early motor patterns (for example, the Moro reflex, ATNR, SSNR, etc.) are not integrated.
If an adult is unable to sense their body or their sensory system is overloaded, they will be anxious, impulsive, or, conversely, inhibited. This behavior is a cry for help, not a conscious choice.
Level
Systems and Interactions of Brain Regions
At this level, the brain integrates sensory signals, memory, emotions, and motor skills into coordinated networks. Different areas of the brain function as a unified system: the visual cortex interacts with the frontal lobe, the emotional centers interact with the motor centers, and so on. More complex cognitive functions, such as attention, planning, and social interaction, are formed here.
When brain networks don't work in sync, this manifests itself in attention deficits, decreased self-regulation, outbursts of aggression, and communication difficulties. A person may appear absent-minded and moody, but in reality, their brain is failing to synchronize processes.
What interventions are possible:
QEEG and neurofeedback help identify imbalanced activity areas (for example, hyperactivity in the frontal lobe or deficits in the temporal regions) and train their coordination. Brain oscillations (alpha, beta, and theta rhythms) and their ratios indicate how well these networks are functioning.
HRV and breathing practices: help coordinate the functioning of the autonomic nervous system and brain networks.
Cognitive behavioral therapy and attention training help develop neural networks associated with self-regulation, planning, and reflection.
Play and art therapy: activate different areas of the brain simultaneously, promoting the integration of interhemispheric interaction.
The coordinated functioning of brain networks is the foundation of stable behavior and adaptability. Disruptions at this level are like an orchestra, where each musician plays their part without a conductor. Behavior becomes chaotic not because of the child's fault, but because of a disruption in the coordination of neural networks. When these networks are out of sync, we lose the ability to manage emotions and behavior.
Level
Behavior (phenotype)
What we see: Behavior and performance as the tip of the iceberg
Behavior is the external manifestation of our internal neurophysiological and sensory organization. It is what society, our spouse, boss, partner, parents, and our friends see. It includes emotions, reactivity, impulsivity, aggression, social interaction, initiative, motivation, and decision-making. Behavior is the result of all underlying levels, from genetics to electrophysiology. When an adult or teenager behaves "wrong," it's not always a choice, not always a sign of poor parenting or "character." It can be the result of the nervous system: sensory overload, rhythm imbalance, immature neural networks, or nutrient deficiencies. Behavior is a cry for help from an organism that can't cope with the load or lacks the necessary resources to adapt.
What interventions are possible:
Functional and Neurodiagnostics (QEEG, HRV, Sensory Profile): helps to see what is hidden behind the behavior.
Neurotherapy and family support: Behavior is also a response to relationships. Supporting attachment, restoring emotional security and understanding plays a key role.
A personalized support program: based on data from all levels: nutrition, sleep, movement, neurofeedback, and SI therapy. Self- education : understanding that behavior is a symptom, not a target for intervention. When we begin to see the "underlying part of the iceberg," we move from punishment and self-flagellation to support.
It's important to understand that many chronic diseases, and even aging, begin to develop in childhood. Accumulating disruptions to metabolism, immune regulation, sleep, detoxification, and neuroplasticity may not manifest themselves for a long time, but they lay the foundation for future health problems. By treating symptoms as signals rather than simply eliminating them, you can significantly improve your quality of life—both in childhood and in adulthood.
When we look at the holistic picture—from genes to behavior—it becomes clear: true prevention and health begin with understanding the causes, not suppressing the symptoms. This is especially important not only for children but also for adults striving to maintain mental clarity, emotional stability, and energy for years to come.
We don't "treat" behavior and disease symptoms—we work with the system that created them. Our actions are a mirror through which we can see what needs help: the body, the brain, and safety. An interdisciplinary approach is the only way to get a holistic picture and create lasting change. After all, each person is a complex system in which biology, experience, environment, and emotional connections interact. To understand and help each person, we must be able to read this system at all levels. Behavior is only a symptom. And true help begins when we see more than just the external reaction. This is precisely what we learn in the "Neuro. Adults" course—to see not only external behavior and motivation, but also the hidden causes. To diagnose at all levels—from neural networks to sensory integration and brain rhythms. And to help holistically, respecting the biology, characteristics, and needs of each person. This is the path from observation to deep understanding, from reaction to professional support.
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