Thought broadcasting is a delusion in which a person believes their thoughts are being transmitted to others, that people around them can hear or know what they’re thinking without being told. It’s one of several “thought interference” symptoms most closely associated with schizophrenia and other psychotic disorders, occurring in roughly 10% of people experiencing psychosis.
What Thought Broadcasting Feels Like
Someone experiencing thought broadcasting genuinely believes that their private thoughts are no longer private. They may feel that their thoughts are being projected outward like a radio signal, that strangers on the street can hear what they’re thinking, or that their ideas are somehow visible or accessible to everyone nearby. This isn’t a vague worry about being “read” by someone perceptive. It’s an unshakable conviction that thoughts are literally leaving the mind and reaching other people.
The experience often comes paired with other symptoms. A 20-year prospective study found that thought broadcasting commonly co-occurs with auditory verbal hallucinations (hearing voices), feelings of depersonalization (a sense of being detached from yourself), and delusions of self-depreciation (believing you are worthless or guilty of something). Some people also experience what researchers call “fantastic delusions,” elaborate false beliefs about reality, alongside the broadcasting sensation. The combination of hearing voices and believing your thoughts are public can be deeply distressing, reinforcing the feeling that the boundary between your inner world and the outer world has collapsed.
How It Differs From Related Symptoms
Thought broadcasting belongs to a family of symptoms called thought interference, which also includes thought insertion and thought withdrawal. Though they sound similar, each one involves a different disruption to the sense of mental ownership.
- Thought insertion is the belief that thoughts are being placed into your mind by an outside force. It tends to co-occur with delusions of control (feeling that your actions are being directed by someone else) and anxiety.
- Thought withdrawal is the belief that thoughts are being removed or stolen from your mind. It shares overlap with negative symptoms like emotional flatness and withdrawal, as well as depression.
- Thought broadcasting is the belief that your own thoughts are being transmitted outward for others to perceive.
All three share connections to somatic hallucinations and depersonalization, but their symptom profiles diverge in meaningful ways. Thought insertion and thought broadcasting both correlate strongly with hearing voices and feelings of self-depreciation. Thought withdrawal and thought broadcasting both show links to sexual delusions. These distinctions matter clinically because they point to somewhat different constellations of distress and can influence treatment approaches.
Conditions That Cause It
Thought broadcasting is most strongly associated with schizophrenia spectrum disorders. In a large study of patients with psychosis, about 10.3% had documented thought broadcasting, a rate similar to thought insertion (10.7%) and higher than thought withdrawal or somatic passivity (each around 4.9%). It’s considered one of the “first-rank” symptoms originally identified by psychiatrist Kurt Schneider as particularly characteristic of schizophrenia.
That said, thought broadcasting is not exclusive to schizophrenia. It can appear during severe manic episodes in bipolar disorder, in schizoaffective disorder, and occasionally in psychotic depression or substance-induced psychosis. The common thread is a psychotic state where the brain’s ability to distinguish internal mental events from external reality breaks down.
Why the Brain Produces This Delusion
The leading psychological explanation centers on a process called source monitoring: the brain’s ability to tell the difference between something you generated internally (a thought, a memory, an imagined voice) and something that came from the outside world. In people with schizophrenia spectrum disorders, this system is measurably impaired. In experimental tasks, both patients with active hallucinations and those without made significantly more source monitoring errors than healthy controls, misattributing internally generated information to external sources.
This explains the core experience of thought broadcasting. If your brain struggles to tag a thought as “mine, internal, private,” that thought may feel as though it exists in shared space, accessible to anyone. The error isn’t in the content of the thought itself but in the label your brain attaches to it.
Cognitive models also point to disruptions in top-down processing, the way your brain uses expectations and prior knowledge to interpret incoming signals. People with psychotic symptoms show a bias toward perceiving things that aren’t there, essentially filling in sensory information based on expectation rather than actual input. When this combines with poor source monitoring, the result can be a compelling but false sense that thoughts are escaping the mind.
At the brain level, several regions are involved. The salience network, anchored by the anterior insular cortex and the dorsal anterior cingulate cortex, acts as a filter that decides what internal and external signals deserve your conscious attention. This network connects to the amygdala (threat detection), the hypothalamus (bodily regulation), and the ventral tegmental area (part of the dopamine system). In people with schizophrenia spectrum disorders, abnormal input from the hippocampus to this salience network has been observed during active hallucinations. Essentially, memory-related signals flood the awareness system at the wrong time, making internally generated experiences feel as real and present as external ones.
How Thought Broadcasting Is Treated
Thought broadcasting is treated as part of the broader psychotic disorder it belongs to, not as a standalone symptom. The primary treatment is antipsychotic medication, which works by blocking dopamine receptors in the brain (and in the case of newer medications, serotonin receptors as well). Newer antipsychotics are generally better tolerated and produce fewer movement-related side effects than older ones.
For many people, antipsychotic medication significantly reduces or eliminates delusional beliefs, including thought broadcasting. The timeline varies, but most people begin to notice some improvement within a few weeks, though full stabilization can take longer. If anxiety or sleep problems are prominent, additional medications may be prescribed alongside the antipsychotic.
Psychotherapy, particularly cognitive behavioral therapy adapted for psychosis, can also help. This approach doesn’t try to argue someone out of a delusion. Instead, it helps people examine the evidence for their beliefs, develop alternative explanations, and reduce the distress that delusions cause. For someone with thought broadcasting, therapy might involve learning to recognize the source monitoring error, noticing that other people’s behavior doesn’t actually confirm that they’re receiving broadcasted thoughts, and gradually rebuilding trust in the privacy of one’s own mind.
The combination of medication and therapy tends to produce better outcomes than either alone. Because thought broadcasting often co-occurs with hallucinations and other delusions, treatment typically addresses the full range of psychotic symptoms rather than targeting any single one in isolation.