丘腦(thalamus)在這裡很值得看。傳統 cortico-striato-thalamo-cortical model 會把迷幻經驗理解成「thalamic gating」改變:平常被篩掉的內外訊息變得更容易進入皮質。這可以解釋感覺增強、聯想變多、邊界感變弱。但 REBUS 模型提醒我們,事情不只是底層訊號灌上來,也包含高階皮質對這些訊號的壓制變弱。也就是:不是世界突然變得有意義,而是大腦原本用來固定意義的模型暫時鬆手。
這支持一個臨床上很直覺的模型:psilocybin 不是讓人「想通」而已,而是把自我敘事、情緒 salience、身體感與記憶重新接在一起。若心理治療支持夠好,患者可能在這個窗口中重新接觸原本被迴避的情緒,並用新的脈絡整合它。若情境不好,這種高可塑性也可能變成混亂、恐慌或創傷經驗被重新激活,所以 set and setting 不是儀式感,而是神經可塑性介入的安全條件。
Daws et al., Nature Medicine 2022:psilocybin 組的全腦整合變化與療效相關,escitalopram 組沒有同樣影像模式。
所以「重啟 DMN」到底準不準?
準,但要加三個括號。
第一,重啟不是關機重開。fMRI 看到的是 functional connectivity、CBF、network modularity 的改變,不是神經元被清空,也不是人格被重灌。比較精確的英文是 reset-like process、network reconfiguration、acute disintegration followed by post-acute reintegration。
Carhart-Harris RL et al. Neural correlates of the psychedelic state as determined by fMRI studies with psilocybin. PNAS. 2012;109:2138-2143. doi:10.1073/pnas.1119598109
Carhart-Harris RL et al. Psilocybin for treatment-resistant depression: fMRI-measured brain mechanisms. Scientific Reports. 2017;7:13187. doi:10.1038/s41598-017-13282-7
Carhart-Harris RL, Friston KJ. REBUS and the anarchic brain. Pharmacological Reviews. 2019;71:316-344. doi:10.1124/pr.118.017160
Preller KH et al. Psilocybin induces time-dependent changes in global functional connectivity. Biological Psychiatry. 2020;88:197-207. doi:10.1016/j.biopsych.2019.12.027
Daws RE et al. Increased global integration in the brain after psilocybin therapy for depression. Nature Medicine. 2022;28:844-851. doi:10.1038/s41591-022-01744-z
Carhart-Harris RL et al. Trial of psilocybin versus escitalopram for depression. New England Journal of Medicine. 2021;384:1402-1411. doi:10.1056/NEJMoa2032994
Barrett FS et al. Emotions and brain function are altered up to one month after a single high dose of psilocybin. Scientific Reports. 2020;10:2214. doi:10.1038/s41598-020-59282-y
憂鬱症不只是一種單純的情緒低落,它更像是一層無形的屏障,將患者與周遭世界隔絕開來,嚴重影響他們的人際互動、參與社會活動的意願,甚至是最基本的日常生活功能。當傳統的藥物治療與心理諮商效果有限,特別是面對那些難以改善的「難治型憂鬱症」時,腦部刺激治療,例如「經顱磁刺激 (Transcranial Magnetic Stimulation, TMS)」,為許多患者帶來了新的曙光。TMS是一種非侵入性的現代醫學技術,透過特定頻率的電磁波精準地刺激大腦特定區域,以調節神經元活動,進而改善憂鬱症狀。然而,我們過去在探討憂鬱症治療成效時,往往側重於情緒症狀的改善,卻較少關注患者在接受這些先進治療時,其「社會需求」——包括經濟穩定、社區支持、人際連結、住屋狀況等——究竟扮演了什麼角色?這些社會因素是否會影響治療成效?以及,治療本身能否同時改善這些因疾病而生的社會困境?這項最新的研究,正試圖填補這一知識空白,深入探討接受TMS治療的憂鬱症患者,他們的社會生活脈絡如何,以及治療可能帶來的全面影響。
這篇研究怎麼做?
這項研究是由美國羅德島州的巴特勒醫院 (Butler Hospital) 精神科團隊所執行。他們採取了「回溯性分析」的研究方法,詳細檢視了從 2019 年到 2021 年間,曾該院接受急性期經顱磁刺激 (TMS) 治療的成人重度憂鬱症患者的醫療紀錄。最終,研究團隊總共納入了 74 位符合條件的患者進行分析。研究的主要目的有二:第一,描繪這些接受TMS治療的患者,其「社會需求與資產」的現況為何?第二,評估這些社會需求負擔,是否與患者對TMS治療的「反應」或「症狀緩解」程度之間存在關聯性。為了精確評估患者的憂鬱症狀嚴重程度以及治療後的進展,研究人員採用了廣泛使用的「憂鬱症狀量表—自填版 (Inventory of Depressive Symptomatology-Self Report, IDS-SR)」。而對於社會需求與社會資產的衡量,則使用了經過修改的「可問責健康社區—健康相關社會需求篩檢工具 (Accountable Health Communities Health-Related Social Needs, AHC-HRSN)」,這份工具涵蓋了從基本生活需求到社區參與程度等多元面向,旨在全面性地了解患者的社會生活狀況。
Social determinants of health play a critical role in mental health outcomes, yet their influence on access to and response to transcranial magnetic stimulation (TMS) for major depressive disorder (MDD) remains poorly understood. As TMS is an effective intervention for treatment-resistant depression and may serve a clinically vulnerable population, characterizing the social context of patients receiving TMS is essential. We examined social needs and assets in a TMS-treated cohort and evaluated their relationship to treatment response, hypothesizing greater social need burden among non-responders. We conducted a retrospective analysis of adults who received an acute course of TMS for MDD at Butler Hospital between 2019 and 2021. Depressive symptom severity, response, and remission were assessed using the Inventory of Depressive Symptomatology-Self Report (IDS-SR). Social needs and assets were measured using a modified Accountable Health Communities Health-Related Social Needs (AHC-HRSN) Screening Tool, including items assessing community engagement. Seventy-four patients were included in the analysis. Baseline social needs were not significantly associated with TMS response or remission. Patients accessing TMS generally demonstrated high levels of social assets and minimal deficits in basic needs and substance use; however, most reported social isolation and substantial functional impairment. Several domains of self-reported social needs improved following TMS treatment, independent of clinical response. Patients receiving TMS exhibited relatively high social assets despite pronounced psychosocial burden associated with depression. Several self-reported psychosocial domains improved following treatment, including isolation/loneliness, difficulty with concentration, and ability to complete errands independently. These findings suggest that TMS may coincide with functional improvements beyond depressive symptom reduction and highlights opportunities to integrate supportive psychosocial services alongside treatment that may further optimize clinical outcomes and reduce social unmet needs. Further investigation is needed to understand how social context influences access to and outcomes of TMS care.
Major depressive disorder (MDD), a leading cause of disability and mortality globally, carries the highest burden among mental health disorders in industrialized nations. This review article emphasizes accurate diagnosis and effective pharmacologic treatment and management of MDD in adults. A timely, individualized approach to care that addresses the complexity of MDD and improves patient recovery trajectories is recommended.
Li X, Lu C, Zhai Z, et al. Clozapine After 1 Failed Antipsychotic Drug Trial in First-Episode Psychosis: A Randomized Clinical Trial. JAMA Psychiatry. Published online March 11, 2026. doi:10.1001/jamapsychiatry.2026.0086
Healy C, O’Hare K, Lång U, et al. Methylphenidate Treatment and Risk of Psychotic Disorder. JAMA Psychiatry. Published online March 25, 2026. doi:10.1001/jamapsychiatry.2026.0152
PubMed:https://pubmed.ncbi.nlm.nih.gov/41879751/ University College Dublin News:ADHD medication in childhood may reduce later psychosis risk University of Edinburgh News:Childhood ADHD medication may reduce psychosis risk
Fortney JC, et al. Pragmatic Comparative Effectiveness of Primary Care Treatments for Posttraumatic Stress Disorder: A Randomized Clinical Trial. JAMA Psychiatry. 2025.
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