RESULTS

The two factor ANOVA revealed a significant difference in the peak amplitude of the Na wave during the meditation session, between the two categories of subjects:

Meditation Effect on AEP - MLR

PD/46(12 years)              Without Meditation	With Meditation

FIGURE 1 Typical example of AEP- MLRs recorded in a senior subject during a control session (left) and during a meditation session (right). IN each session AEP- MLRs were recorded four times i.e. before (C1), after (C2) and twice during a test period which involved either mentally repeating "one" (N of the control session). or meditation on OM (M of the meditation session).

(viz Factor A = seniors Vs naive subjects), [F = 4.60 (F .05 (1) 1, 32 = 4.15) hence p < .05] However, there was no significant difference between the two states (viz Factor B = premeditation versus during meditation), or of interaction between Factors A and B in meditation sessions (P > .10 in both cases). The two factor ANOVA for the peak amplitude of the Na wave during control sessions, and also for the peak latency and peak amplitude of the short latency wave V and the Pa wave, did not reveal significance of either factors or their interaction, during both meditation and control sessions (p > .10, in all cases cited above). The t-test for paired data (two tailed), revealed a significant (t = 2.78, P < .05) increase in the Na wave peak amplitude of the senior subjects during meditation compared to the values of the preceding state, as well as compared to those of the nonmeditation (control) sessions

(t = 2.69. p < .05). In contrast, there was a significant (t = 5.37, p < .001) reduction in Na wave peak amplitude during tile control period (while repeating "one" ) compared to the preceding state (Figure 1).

   In the naive subjects there was a significant reduction in the Na wave peak amplitude during meditation sessions (t = 6.16. p < .001) compared to the preceding period (Figure 2). There were no significant differences in the Na wave peak amplitude of naive subjects during the control period compared to the preceding period (p > .10). Also there were no significant differences in the peak amplitudes and peak latencies of wave V and Pa wave, during both meditation and control periods, compared to their preceding periods or in a comparison between meditation and control periods for both categories of subjects (p > .20, in all comparisons)
 

AEP - MLRs DURING OM MEDITATION

SCK/38 (15 days)             Without Meditation	With Meditation

FIGURE 2 Typical example of AEP - MLRs recorded in a naïve subject during a control session (left). and during a meditation session (right). The rest of the details are the same as for FIGURE 1.

   The group means and standard deviations of the different parameters for the senior subjects have been provided in Table 1, and for naive subjects in Table 2.