Intrusive thoughts can feel sudden, repetitive, and difficult to control. They may arrive as unwanted images, worries, memories, or impulses that feel distressing even when a person knows they are not choosing them. For many clients, understanding what is happening in the brain can be an important first step toward self-compassion and effective treatment.
What is the Triple Network Model?
The Triple Network Model is a helpful way of understanding how three large-scale brain networks interact: the Default Mode Network, the Salience Network, and the Central Executive Network. The Default Mode Network is active when the mind turns inward, including memory, reflection, and self-focused thinking. The Salience Network helps detect what feels important or threatening, including strong emotions and body sensations. The Central Executive Network supports focus, planning, problem-solving, and flexible thinking.
When these networks work together smoothly, the brain can shift between inner reflection, emotional awareness, and practical action. When a person has experienced trauma, chronic stress, anxiety, or overwhelming life events, this balance may be disrupted. The brain can become more alert to threat, more caught in self-focused loops, and less able to access calm, flexible problem-solving in the moment.
Why intrusive thoughts can feel so powerful
Intrusive thoughts often become distressing because the Salience Network assigns them a high level of importance: “Pay attention to this.” The Default Mode Network may then pull the mind into repeated searching, replaying, or meaning-making, while the Central Executive Network may struggle to step in with perspective, grounding, or choice. This can leave clients feeling trapped in a cycle of fear, doubt, shame, or mental checking.
Importantly, intrusive thoughts are not a sign of weakness or failure. They are often the mind and nervous system trying to resolve something that still feels unfinished, unsafe, or emotionally charged. Therapy can help clients understand these experiences without judgment and build a more compassionate relationship with their thoughts.
How EMDR can support clients with intrusive thoughts
Eye Movement Desensitisation and Reprocessing (EMDR) is a structured therapy that helps the brain reprocess distressing memories, triggers, and beliefs so they feel less vivid, less emotionally intense, and more integrated. Rather than asking clients to simply “think differently,” EMDR works with the way distress is stored across memory, emotion, body sensations, and meaning.
From a Triple Network perspective, EMDR may support clients by helping the nervous system reduce threat activation, allowing painful memories or triggers to be processed with greater emotional distance and cognitive flexibility. As the emotional charge linked to a memory or belief reduces, clients may find that intrusive thoughts become less frequent, less convincing, or easier to respond to with grounded awareness.
At Artemis Psychology Services, EMDR is offered within a safe, collaborative, and personalised treatment plan. This includes careful assessment, preparation, stabilisation skills, and pacing that respects each client’s readiness. For some clients, EMDR may focus on past experiences; for others, it may begin with present-day triggers, body sensations, or distressing beliefs that keep intrusive thoughts active.
Moving toward relief
If intrusive thoughts are affecting your sleep, relationships, confidence, or sense of safety, you do not have to manage them alone. With the right support, it is possible to understand why these thoughts are occurring, reduce their intensity, and develop a steadier sense of choice and control. Artemis Psychology Services can help clients explore whether EMDR may be an appropriate part of their therapy journey.
Sources
- Menon, V. (2011). Large-scale brain networks and psychopathology: a unifying triple network model. Trends in Cognitive Sciences, 15(10), 483–506.
- Chan, A. (2021). Reassembling Models of Reality: Theory and Clinical Practice. W. W. Norton & Company.
Cynthia — Artemis Psychology Services