Antar trataka — internalised after-image
Close your eyes after gazing and hold the mental image of the flame at the brow centre.
Key takeaways
- What it is: Close your eyes after gazing and hold the mental image of the flame at the brow centre.
- Why it works: The retinal after-image is a real neurological imprint that briefly substitutes an external object for an internal one. Sustaining attention on this fading image trains the mind to hold a mental object steady — the core skill needed for concentration (samatha) meditation more broadly. It bridges outer-object and purely inner-object practice.
- Evidence: Plausible mechanism, limited direct outcome data.
- Avoid: Immediately opening the eyes when the image fades, losing the transition from outer to inner attention that is the point of the practice.
Why it works
The retinal after-image is a real neurological imprint that briefly substitutes an external object for an internal one. Sustaining attention on this fading image trains the mind to hold a mental object steady — the core skill needed for concentration (samatha) meditation more broadly. It bridges outer-object and purely inner-object practice.
How to do it
- 1After a round of external gazing, gently close the eyes.
- 2Locate the complementary-colour after-image — usually orange-blue — and hold attention there.
- 3When the image fades, resist opening the eyes immediately; try to reconstruct it mentally.
- 4Note when the mind wanders and bring attention back to the imagined flame without self-criticism.
What the evidence says
MechanisticRetinal after-images are well-characterised physiologically. Using them as a meditation object mirrors the "mental image" instruction in samatha traditions, which has modest empirical support for improving sustained attention.
Honest caveat: No trials test antar trataka specifically; evidence borrows from the broader concentration-meditation literature.
Common mistake
Immediately opening the eyes when the image fades, losing the transition from outer to inner attention that is the point of the practice.
IX Coach coaches the transition: after the external phase it cues you to close your eyes and describes what to notice, so the internalisation step is guided rather than guessed.
Practice this with IX Coach →