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Effect of bilateral repetitive transcranial magnetic stimulation on pre-attentive processing in methamphetamine addicts / 中华行为医学与脑科学杂志
Chinese Journal of Behavioral Medicine and Brain Science ; (12): 497-503, 2021.
Article in Chinese | WPRIM | ID: wpr-909476
ABSTRACT

Objective:

To investigate the effect of bilateral repetitive transcranial magnetic stimulation (rTMS) on the pre-attentive processing of methamphetamine addicts.

Methods:

Forty methamphetamine addicts were screened and equally divided into the intervention group and the control group by random number table method.The intervention group was treated with bilateral simultaneous stimulation with 10 Hz on the left DLPFC and 1 Hz on the right DLPFC with 7 days of continuous intervention.The same scheme was used to intervene the control group, but with pseudo-stimulation. The changes of amplitude and latency of mismatch negative wave(MMN) before and after intervention were compared. SPSS 24.0 software was used for statistical analysis. Independent sample t-test was used for inter group comparison, and paired sample t-test was used for intra group comparison before and after intervention.

Results:

Before rTMS, there were no significant differences in MMN(F3, Fz, F4) amplitude (intervention group (-0.90±0.28)μV, (-0.98±0.19)μV, (-0.96±0.19)μV; control group (-0.92±0.21)μV, (-0.89±0.20)μV, (-0.94±0.16)μV)and latency(intervention group (184.16±33.07)ms, (179.20±25.35)ms, (184.95±28.22)ms; control group (184.91±26.96)ms, (180.99±25.29)ms, (181.55±23.19)ms) between the two groups (all P>0.05). After the intervention, there were significant differences in MMN(Fz, F4) amplitude(intervention group (-1.38±0.16)μV, (-1.17±0.19)μV; control group (-0.91±0.17) μV, (-0.99±0.16)μV) between the two groups (both P<0.01), but there were no significant differences in MMN (F3) amplitude(intervention group (-1.01±0.59)μV; control group (-0.80±0.50)μV), and in MMN (F3, Fz, F4) latency(intervention group (177.38±26.45)ms, (172.17±23.87)ms, (179.84±23.60)ms; control group (182.08±24.95)ms, (177.94±21.30)ms, (179.18±21.62)ms)between the two groups (all P>0.05). There were statistically significant differences in MMN( Fz, F4) amplitude (before-intervention (-0.98±0.19)μV, (-0.96±0.19)μV; after-intervention (-1.38±0.16)μV, (-1.17±0.19)μV)before and after intervention in the intervention group (both P<0.05), but there was no significant difference in MMN(F3) amplitude(before-intervention (-0.90±0.28)μV; after-intervention (-1.01±0.59)μV)before and after intervention in the intervention group ( P>0.05), and there were statistically significant differences in MMN(F3, Fz, F4) latency (before-intervention (184.16±33.07)ms, (179.20±25.35)ms, (184.95±28.22)ms; after-intervention (177.38±26.45)ms, (172.17±23.87)ms, (179.84±23.60)ms)before and after intervention in the intervention group(all P<0.05). After pseudo-stimulation, there were no statistically significant differences in MMN( F3, Fz, F4) amplitude(before-intervention (-0.92±0.21)μV, (-0.89±0.20)μV, (-0.94±0.16)μV; after-intervention (-0.80±0.50)μV, (-0.91±0.17)μV, (-0.99±0.16)μV)and latency (before-intervention (184.91±26.96)ms, (180.99±25.29)ms, (181.55±23.19)ms; after-intervention (182.08±24.95)ms, (177.94±21.30)ms, (179.18±21.62)ms) before and after intervention in the control group (all P>0.05).

Conclusion:

After repeated transcranial magnetic stimulation, the pre-attentive processing of the intervention group is improved, which shows that bilateral simultaneous stimulation of the rTMS program is effective.

Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Chinese Journal of Behavioral Medicine and Brain Science Year: 2021 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Chinese Journal of Behavioral Medicine and Brain Science Year: 2021 Type: Article