Trauma is a [[Psychology|psychological]] and [[Neuroscience|neurological]] condition arising from exposure to overwhelming stress that exceeds the brain and body’s ability to regulate and integrate the experience. It disrupts normal functioning of the [[Nervous System]] and reshapes key [[Brain Networks]], leaving lasting changes in emotion, memory, and stress responses. ## Core Problem - Trauma alters how the brain encodes, stores, and retrieves memories - It dysregulates emotional and physiological responses, leaving individuals hypersensitive to threat or emotionally numbed - Long-term effects are not confined to conscious memory but embedded in neural circuitry and body-based responses ## Key [[Psychology|Psychological]] and Neuroscientific Mechanisms - **Amygdala hyperactivation**: trauma heightens threat detection, leading to hypervigilance and exaggerated fear responses - [[Amygdala]] central in fear conditioning and emotional salience - **Hippocampal dysfunction**: impaired ability to contextualize and organize traumatic memory, resulting in intrusive flashbacks and fragmented recall - [[Hippocampus]] central to episodic memory and spatial context - **[[Prefrontal cortex]] underactivity**: diminished top-down regulation of emotions, weakening cognitive control over fear responses - [[Prefrontal Cortex]] involved in executive control and self-regulation - **[[Anterior Cingulate Cortex]]**: disrupted error monitoring and emotional regulation, linked to intrusive symptoms and emotional dysregulation - **[[Salience Network]]** dysregulation: heightened reactivity to threat cues, difficulty switching between [[Default Mode Network (DMN)]] and [[Executive Control Network]] - Trauma alters connectivity between [[Brain Networks]]: - [[Default Mode Network (DMN)]]: disrupted self-referential processing, intrusive thoughts - [[Frontoparietal Control Network (FPCN)]]: impaired executive regulation - [[Salience Network]]: heightened threat sensitivity - [[Ventral Attention Network (VAN)]]: increased distractibility from trauma cues ## [[Psychology|Psychological]] Context - Central to [[Psychology]] and clinical disciplines such as [[Neuropsychology]], [[Cognitive Neuroscience]], and [[Clinical Neuroscience]] - Linked directly to [[Post-Traumatic Stress Disorder (PTSD)]], complex trauma, and dissociative disorders - Trauma is not only mental but systemic: chronic stress reshapes the [[Hypothalamus]] and HPA axis (hypothalamic–pituitary–adrenal), altering cortisol regulation ## Practical Implications - **Therapeutic approaches** target neural and [[Psychology|psychological]] recovery: - [[Cognitive Behavioral Therapy (CBT)]]: reframing maladaptive thought patterns - Eye Movement Desensitization and Reprocessing (EMDR): reprocessing traumatic memory networks - Somatic therapies: addressing trauma held in the [[Limbic System]] and body - Pharmacological interventions: targeting neurotransmitter systems that modulate fear, stress, and memory - Trauma-informed care emphasizes safety, trust, and gradual re-regulation of the nervous system ## References - [Psychological Trauma - APA](https://dictionary.apa.org/trauma) - [The Body Keeps the Score - Bessel van der Kolk](https://www.penguinrandomhouse.com/books/227515/the-body-keeps-the-score-by-bessel-van-der-kolk-md/) - [Neurobiology of Trauma - NCBI](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3182008/) - [Trauma - Wikipedia](https://en.wikipedia.org/wiki/Psychological_trauma)