All subjects were also tested on a number of other behavioral tasks; however, the active and sham SD groups showed equivalent performance. This suggested that the effects of rTMS were specific to the DMS task. Two cortical EGFR inhibitor regions distinguished the active and sham SD groups. The sham group had greater fMRI activation in the right parahippocampal gyrus, while the active group had greater activation in a cortical region directly beneath where the coil had been placed in the TMS sessions. The results of the last step Inhibitors,research,lifescience,medical indicated that multiple sessions of rTMS applied concurrently with
DMS task performance over the course of SD worked to generate sufficient neuroplasticity and subsequent Inhibitors,research,lifescience,medical neural changes in the distributed circuitry involved in processing the DMS task. This enabled superior cognitive working memory performance in subjects who received active rTMS a day after the last rTMS session, presumably long after the acute action of rTMS wore off at the local site of stimulation. As such, we suggest that fMRI-guided rTMS increased the resilience of neural circuitry specifically involved in WM to prevent the full impact of SD. The TMS paradigm used here may be a useful tool to help remediate specific cognitive deficits by strengthening networks vital to particular processing Inhibitors,research,lifescience,medical but weakened by the effects of age. Magnetic seizure therapy At
subconvulsive levels, TMS has been found Inhibitors,research,lifescience,medical to have modest antidepressant effects, particularly in elderlypopulations. One way to overcome this limitation would be through increasing its dosage into the convulsive range, given the superior antidepressant potency of electroconvulsive therapy (ECT). While ECTis unparalleled in efficacy even in elderly populations, its risk of amnesia remains a limiting factor, particularly in elderly populations. The rationale behind magnetic seizure therapy (MST) is to preserve the efficacy of ECT while reducing its risk of amnesia through enhanced locality offered by
magnetic stimulation.84,85 When using subconvulsive TMS, the accidental Inhibitors,research,lifescience,medical induction of a seizure would be deemed an adverse effect, but under controlled conditions in a patient under anesthesia, the resultant seizure could confer robust antidepressant properties as new seen with ECT. The conceptualization of MST was based on combining the unique characteristics of TMS and ECT,86,87 that is, the use of magnetic pulses that can pass unimpeded through the scalp and skull of the former, to generate tonic-clonic seizure activity with known antidepressant activity of the latter. Moreover, TMS has been found to have neurocognitive advantages in that it has no known cognitive adverse effects when used to treat MDD,88 has been shown to enhance cognitive abilities,89 and has been found to be beneficial for neurorehabilitative paradigms.