NEUROTRANSMITTERS, BRAIN REGULATION, AND MENTAL HEALTH A NEUROSCIENCE-BASED FRAMEWORK FOR EMOTIONAL AND BEHAVIOURAL REGULATION

Neuroscience-based understanding is foundational to the study of mental health because emotional and behavioural states emerge from brain-level regulatory processes rather than isolated psychological phenomena. This paper examines how neurotransmitter systems—including dopamine, serotonin, endorphins, oxytocin—and stress-related neurohormones such as adrenaline and cortisol influence neural regulation underlying mood, behaviour, cognition, and physiological stability. Anxiety is examined not merely as a diagnostic category, but as a neuroregulated state that can adversely affect multiple domains of human functioning, including interpersonal relationships, professional performance, decision-making, memory processes, attentional control, behavioural regulation, and bodily coordination. Neurochemical imbalance is discussed as a systemic disruption that alters reward processing, threat perception, dependency patterns, fear conditioning, impulsive behaviour, and vulnerability to stress. Rather than framing these outcomes as isolated symptoms, this framework conceptualises them as interconnected expressions of dysregulated neural signalling and neuroendocrine activity. The paper is theoretical and integrative in nature and does not propose clinical treatment protocols. Its objective is to clarify why neuroscience provides a foundational explanatory framework for understanding anxiety-related behavioural and cognitive disturbances and to highlight the relevance of brain-based mechanisms in advancing coherent mental health models.