For this question, you are going to work on EMG_midterm.mat file. Multiple channels simultaneous recordings were saved in this file, but not all of them emg data. 1.1 After you load the data, investigate it, answer following questions ( 3 points). Answer following questions 1. How many emg channels are present. 2. What are the names of muscles investigated. 3. What is the sampling rate for emg channels. 4. How the emg recordings are saved? In columns or rows. 5. Is the time vector provided? 6. How the time recordings are saved? in columns or rows