Researchers turn to neurofeedback to clear the fog of chemo brain | cleveland.com Jean Alvarez is doing a study, at the Cleveland Clinic, on the effectiveness of neurofeedback with "chemo-brain." "I did very well with treatment," said Alvarez, a 10-year breast cancer survivor. "But I never felt like I got my brain back." The symptoms she described -- gaps in memory, low-level depression, fatigue -- are typical of those who complain about having chemo brain. "My mind was working much more slowly,"