RESUMO
OBJECTIVES: The study objective was to study the change in the critical flicker fusion (CFF) after a yogic visual concentration practice (trataka). DESIGN: Thirty (30) subjects participated in a study where they were evaluated for the CFF immediately before and after the practice. The subjects also participated in a comparable control session. SUBJECTS: The subjects were 30 volunteers in the age range 25-40. Fifteen (15) of the volunteers were male. The mean age was 31.33 ± 4.67. RESULTS: The CFF showed a statistically significant increase from 37.35 ± 2.84 to 38.66 ± 2.91 after the yoga practice of trataka. The control session did not produce a statistically significant change in the CFF. CONCLUSIONS: An increase in the CFF is seen immediately after the yogic concentration practice called trataka.
