Patients will perform a session (inhibition) of HD-TDCS of twenty minutes with intensity of 3 milliamps in the left temporal cortex. Before and after each session, patients will perform the six-minute walk test. Heart rate variability (HRV) will be evaluated throughout the protocol through Holter (3-channel). At the end, the perception of exertion and the level of dyspnea of the patient, distance covered and blood pressure will be evaluated.

Patients will perform a session (stimulation) of HD-TDCS of twenty minutes with intensity of 3 milliamps in the left temporal cortex. Before and after each session, patients will perform the six-minute walk test. Heart rate variability (HRV) will be evaluated throughout the protocol through Holter (3-channel). At the end, the perception of exertion and the level of dyspnea of the patient, distance covered and blood pressure will be evaluated.

Patients will perform a twenty-minute session (SHAN) of HD-TDCS with an intensity of 3 milliamps in the left temporal cortex. Before and after each session, patients will perform the six-minute walk test. Heart rate variability (HRV) will be evaluated throughout the protocol through Holter (3-channel). At the end, the perception of exertion and the level of dyspnea of the patient, distance covered and blood pressure will be evaluated.

Transcranial direct current stimulation, in recent decades, has been identified as a non-invasive tool for transiently modulating human brain activity. The technique consists of the application of a low-intensity continuous electric current, through electrodes applied to the scalp, acting in a regulatory way on the frequency of triggered action potentials, however, without interacting directly with the neurons.

To analyze the distance walked by these patients after the six-minute walk test after the application of HD-Tdcs

To evaluate the effects of HD-TDCS on the left temporal lobe - T3 on heart rate variability during the six-minute walk test in patients with heart failure