When the Spirit Rides: Bori Trance in Hausa Communities of Nigeria and What the Brain Does in Altered States

Ancestral Wisdom · Metaphysical Wellness · Science Meets Spirit

What Bori Is, and Who Gets to Define It

Bori spirit possession is a Hausa tradition rooted in what is now northern Nigeria. Fremont Besmer’s 1983 ethnography is titled for the three parties in the room: Horses, Musicians & Gods. The medium is the horse. The musician plays. The spirit arrives. The word “cult” sits in that book’s subtitle, and we leave it there, in the citation. In this post we call it what it is, a tradition, and we use the language of the people who practice it.

The Hausa Bori tradition is not a relic. According to Okagbue’s 2008 study of Bori performance, Islam became the dominant cultural and religious force in Hausa territory after the early nineteenth-century jihad of Usman dan Fodio, and it pushed Bori to the margins or underground. Bori survived because its core belief, that spirits can shape human life, persisted. A tradition that outlasts two centuries of pressure is not a museum piece. It is a community decision, renewed in every generation.

The same scholarship offers a harder insight. Okagbue argues that Bori’s marginal status appeals to people in Hausa society who feel excluded and want to express identities and viewpoints that differ from the mainstream, and that possession performance lets members resist those who oppress them and, at times, reverse existing power relations. Read that slowly. Trance, in this account, is not only a spiritual event. It is also a social one, a place where people with little formal power can speak with authority that is not theirs alone.

A note on precision, because precision is a form of respect. One of the most widely read ethnographies of bori, Adeline Masquelier’s Prayer Has Spoiled Everything (Duke University Press, 2001), is set in Dogondoutchi, a town in southwestern Niger, among the Mawri, a Hausa-speaking people. That is a neighboring portrait, not a map of every Bori community in Nigeria. Masquelier describes bori as competing with and borrowing from Islam, and as more than simple resistance to Islam, patriarchy, or the state. That is a relationship, not a battle, and no single study can speak for everyone who practices.

The Horse, the Musician, and the Community

Why “horse”? Read as a metaphor, the word makes the medium a bearer rather than a patient. A horse is not broken when it carries a rider. It is doing the work horses do. We cannot speak for the Hausa speakers who chose this image, and we will not pretend to explain their cosmology from the outside. We can say what the image does in the room: it gives the person at the center a role with dignity, and it gives everyone else a job.

The second figure in Besmer’s title, the musician, tells us something about structure. Whatever else sound is doing in a Bori gathering, it is organizing the space. It announces that something is happening and that everyone present is inside it. If you want the broader science of how rhythm and ceremony synchronize a group, our post on the neuroscience of ritual walks through it, and our look at the Nigerian talking drum shows how Nigerian drumming traditions carry meaning far beyond entertainment.

Here is the difference Ubuntu Village keeps returning to. A person in trance without a community is in danger. A person in trance inside a community is in ceremony. The horse, the musician, and the spirit are not three separate things. They are one event, held by many hands. “I am because we are” is not only a philosophy of belonging. In a Bori gathering it is also a safety system.

What the Brain Does in Altered States of Consciousness: What Researchers Have Measured

We searched for published brain imaging of Bori mediums and did not find any. We say that plainly, because it shapes everything that follows. The research below comes from other traditions, and it can illuminate questions without answering them for Bori.

The closest window comes from Brazil. Peres and colleagues, publishing in PLOS ONE in 2012 scanned ten psychographers, mediums who write while in a trance state, using single photon emission computed tomography (SPECT), comparing brain blood flow during trance writing against ordinary writing. The paper’s own abstract reports that the more experienced mediums showed lower activity during trance writing in several regions, including the left hippocampus, the left anterior cingulate, and the right superior temporal gyrus, while the group as a whole showed no significant differences. The authors call the study exploratory, note the small sample, and call for replication. Ten people cannot carry a worldview. What the study can say is modest and still interesting: something measurable may differ in experienced practitioners when they enter trance.

A second study asks a question that matters to anyone who has ever heard trance called a symptom. Moreira-Almeida, Lotufo Neto, and Cardeña interviewed 24 mediums from Spiritist centers in São Paulo and compared them with published data on patients with dissociative identity disorder. The mediums resembled those patients in only two ways, a predominance of women and frequent first-rank symptoms. Compared with the patients, they reported better social adjustment, fewer mental disorders, less use of mental health services, no antipsychotic use, and less childhood physical or sexual abuse. The authors concluded that mediumship in this sample was distinct from dissociative identity disorder. Spiritism is not Bori spirit possession, and a sample of 24 is not a verdict. But the finding underlines a point our earlier post on what Western psychology misses about spiritual experience makes at length: context and function matter when we decide whether trance is illness.

The clinical field is still working this out. Spiegel and colleagues, a group of dissociation researchers advising on the fifth edition of the Diagnostic and Statistical Manual, reviewed clinical, cultural, and neurobiological evidence and recommended that experiences of possession be included in the definition of identity disruption and that dissociative trance disorder move into the unspecified category. They also concluded that a growing body of evidence links dissociative disorders to a history of trauma. Hold both truths. Trauma-linked dissociation is real and deserves care. Culturally held trance is also real and deserves dignity, whether it is practiced in São Paulo or in a Hausa compound. Trance and dissociation research is still sorting how the two relate, and Bori communities do not have to settle that argument before their practices are met with respect.

A note on the evidence: the brain imaging above comes from Brazilian mediums, not from Bori mediums, and its authors describe it as small and exploratory. The diagnostic recommendations come from researchers advising the manual’s revision, not from a final ruling. We name what is contested rather than resolving it for you.

Complementary, Not Reducible: The Science of Culturally Held Trance

Research on altered states of consciousness can show blood flow. It cannot tell you who is speaking, and it was never built to. A tradition can tell you who is speaking. It was never built to measure oxygen use. Science Meets Spirit does not ask either one to do the other’s job. It asks each to answer the question it was built for, and it refuses the lazy move of declaring one the winner.

When we call Bori spirit possession a healing technology, we mean something specific and limited. Our reading is that it is a structured way, held by mediums, musicians, and a gathered community, of giving suffering a name, a form, and an audience. That is a description of function, not a medical claim. We are not saying Bori cures any disease, and we are not saying trance should replace medical or mental health care. Our post on African traditions of embodied divinity explores the wider African understanding that the body can be a place where the sacred arrives, not just a place where illness lives.

The measurable and the sacred can sit at the same table. A researcher can ask what changes in the brain. A practitioner can ask who has come, and why, and what the community owes them. Neither question erases the other. When a tradition has been pushed to the margins for two hundred years, the least science can do is not join the pushing.

How to Talk About Bori Without Doing Harm

If you write about Bori, teach about it, or sit across from someone who practices it, a few commitments help. Use the tradition’s name, not borrowed labels like witchcraft or devil worship. Ask what an experience means to the person and to their community before you decide what it is. Separate a ceremony a community holds on purpose from a state that frightens the person living it. And do not let a single study, from any tradition, stand in for a whole people.

For clinicians, the commitment is simple: curiosity before classification. For storytellers, it is accuracy before atmosphere. For all of us, it is remembering that “the community was the protagonist” is not a slogan. It means the people who hold a tradition get to define it, and our job is to listen well enough to represent it truthfully.

Hausa communities in northern Nigeria, and the Hausa-speaking communities beside them in Niger, are the experts on Bori. This post on Bori spirit possession is one reader’s careful attempt to place their tradition next to the best of what researchers have measured elsewhere, without flattening either. If we have gotten something wrong, we want to hear it, and we will correct it on the page.

I Am Because We Are. And Together, We Heal.

Questions People Ask About Bori and Trance

If you know someone whose spiritual experience was named a symptom before anyone asked what it meant to them, send them this.

Sources & Research

• ‣ Deviants and Outcasts: Power and Politics in Hausa Bori Performances Okagbue, O. (2008). New Theatre Quarterly, 24(3), 270–280.
• ‣ Horses, Musicians & Gods: The Hausa Cult of Possession-Trance Besmer, F. E. (1983). South Hadley, MA: Bergin & Garvey.
• ‣ Prayer Has Spoiled Everything: Possession, Power, and Identity in an Islamic Town of Niger Masquelier, A. (2001). Durham, NC: Duke University Press.
• ‣ Neuroimaging during Trance State: A Contribution to the Study of Dissociation Peres, J. F., Moreira-Almeida, A., Caixeta, L., Leao, F., & Newberg, A. (2012). PLOS ONE, 7(11), e49360.
• ‣ Comparison of Brazilian Spiritist Mediumship and Dissociative Identity Disorder Moreira-Almeida, A., Lotufo Neto, F., & Cardeña, E. (2008). Journal of Nervous and Mental Disease, 196(5), 420–424.
• ‣ Dissociative Disorders in DSM-5 Spiegel, D., Loewenstein, R. J., Lewis-Fernández, R., Sar, V., Simeon, D., Vermetten, E., Cardeña, E., & Dell, P. F. (2011). Depression and Anxiety, 28(12), E17–E45.

Related Reading

• ‣ Music, Ritual, and the Science of Belonging: How Ancestral Sound Healing Brings Us Home
• ‣ Kola Nut Consciousness: Nigeria’s Sacred Plant of Welcome and Witness
• ‣ The Crossroads in the Body: How African Spiritual Frameworks Map Trauma and Transformation
• ‣ Science Meets Spirit: The Complete Series Guide
• ‣ Ancestral Healing: The Complete Series Guide

I Am Because We Are. And Together, We Heal.