Introduction: Current explanations of motivated behavior remain theoretically fragmented across neuroscience, psychology, evolutionary biology, etc. The Proximal Chemical Mandate Principle addresses this fragmentation by proposing that all motivated behavior can be reduced (for unification) to two invariant neurobiological objectives: reward neurochemicals maximization (R↑) (e.g., Dopamine, Opioid , Oxytocin, and more) and/or stress neurochemicals minimization (S↓) (e.g., Norepinephrine, Cortisol, and more).
Methods: We developed this novel theoretical reductionist framework by synthesizing direct evidence from decades of behavioral neuroscience literature, including intracranial self-stimulation, conditioned avoidance paradigms, fiber photometry, and optogenetic studies. The model establishes causal relationships with specific neurochemical signals to motivated behaviors and its ultimate outcome.
Results: Direct experimental evidence demonstrates the following:
Compulsive reward maximization via intracranial self-stimulation, whereby rats repeatedly press levers to stimulate reward pathways despite physiological exhaustion (Olds & Milner, 1954).
Immediate subsecond dopamine encoding of reward value, with nucleus accumbens transients driving motivated action (R↑) within 150–300 ms (Hamid et al., 2021; Mohebi et al., 2024).
Learned stress minimization through conditioned avoidance behaviors (by prediction) that trigger immediately and persist even without immediate threat.
Rapid-onset threat processing via specialized amygdala circuits that detect threats within 120 ms and initiate defensive responses (S↓) within 200 ms (Li et al., 2022).
Real-time instantaneous value–threat integration through prefrontal–striatal circuits that resolve decision conflicts (S↓) within 400–600ms (Zhou et al., 2023).
Conclusions: These findings support a unified novel, testable framework that potentially resolves apparent behavioral paradoxes—including altruism (S↓via altruistic act), addiction (R↑via supernormal stimuli), suicide (S↓), and voluntary childlessness—by demonstrating how identical (R↑,S↓) mandates produce divergent outcomes through contextual implementation. The principle provides testable predictions (if direct mesolimbic dopamine self-stimulation ever stops voluntarily without any other strong environment stimuli, the theory is falsified) for behavioral neuroscience and psychiatry.
Conflicts of interest: None
