Understanding anxiety symptoms as aberrant defensive responding along the threat imminence continuum

Summary & key facts

This review paper suggests that common anxiety symptoms can be seen as exaggerated versions of normal defensive responses. Those defensive responses change depending on how close a threat is (pre-encounter, post-encounter, circa-strike). The author reviews animal and human research linking specific symptoms—like excessive vigilance, persistent worry, bodily arousal, and avoidance—to these threat phases, and highlights the brain circuits that likely support them. The paper frames this as a conceptual model to guide research and treatment, not as definitive proof of cause-and-effect.

Key facts:

• Defensive responses to threat are organized along a threat imminence continuum with three main phases: pre-encounter, post-encounter, and circa-strike.
• Anxiety symptoms such as excessive worry, physiological arousal, and avoidance may reflect an exaggerated expression of otherwise normal defensive responses, according to the reviewed evidence.
• These defensive responses are supported by partially conserved neural circuitry across species, meaning similar brain systems are involved in animals and humans.
• Linking specific symptoms to particular threat-imminence phases can help explain why different symptoms show up at different times or situations.
• The paper is a review and theoretical framework that draws on translational and clinical studies; it proposes plausible links and implications but does not claim to prove causal mechanisms for clinical anxiety.

Abstract

Threat-anticipatory defensive responses have evolved to promote survival in a dynamic world. While inherently adaptive, aberrant expression of defensive responses to potential threat could manifest as pathological anxiety, which is prevalent, ...

Topics

Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes Child and Adolescent Psychosocial and Emotional Development Mental Health Research Topics

Categories

Experimental and Cognitive Psychology Psychology Social Sciences

Tags

Anxiety Arousal Computer science Developmental psychology Epistemology Expression (computer science) Medicine Neuroscience Normative Pathological Pathology Philosophy Programming language Psychiatry Psychology Worry

Conditions & symptoms

Anxiety Anxiety or worry Panic