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producing the desires, through the practice of the meditational exercise of the Perception of Psychic Centres. These psychic centres are associated with the endocrine glands, pituitary and pineal, situated in the middle of the brain. We have seen above that the sex-glands are stimulated by gonadotrophic hormones released by the pituitary. By concentrated perception of the pituitary gland, the secretion and release of gonadotrophic hormones could be inhibited and/or transmuted. This exercise results in the inhibition of the activities of the sex-glands and considerably weakening of the forces of the sexual desire. It is now much easier to countermand the insistence of the sexual desire.
Perception of Psychic Colours
Finally the ascetic (practitioner) practises the meditational exercise of Perception of Psychic Colours-lesya dhyāna—which is a potent tool for reducing the intensity of the sex-impulse by transforming the leśyā which accompanies it. In this exercise, the practitioner produces and superimposes waves of bright colours-red, yellow or whitecorresponding to taijas, padma and sukla leśyā, over the waves of dark colours-corresponding to krsna, nila, and kāpota leśyā-accompanying the sex-impulse, radiating from the subtle body towards the gross
ysical body. Superimposition annihilates/weakens the force of the malevolent lesya and the impulse, ultimately leading to the purification of adhyavasāya.
This process is referred to in verses 52 and 53. The terms 'gfargenta' i.e.. purification of leśyā and oncefagene i.e., purification of adhyavasāya, clearly refer to the above-mentioned exercise-leśyā dhyāna. The term 'u' indicates the process of catharsis described above as a whole.
References: 1. Op. cit., 4/2-30. 2. Ibid., 4/32-49. 3. For detailed discussion of the technique of meditation, see the following tracts on Preksha Dhyan by Yuvacharya Mahāprajna : (i) Contemplation and Auto
ion of Psychic Centres, (iii) Perception of Psychic Colours. ४. सुविसुद्धलेसे मेहावी, परकिरियं च वज्जए णाणी ।
मणसा वयसा काएणं, सव्वफाससहे अणगारे ।। इच्चेवमाहु से वीरे, धुयरए, धुयमोहे से भिक्खू । तम्हा अज्झत्थविसुद्धे, सुविमुक्के आमोक्खाए परिव्वएज्जासि ।।
-Sūyagado (I), IV/52-53.
