# Inverted channels:
def invertSomeChannels():
    for i in range(len(inverted)):
        num=inverted[i]-1
        data.Data[:,num] *= array(-1,'f')
inverted = range(1,25) + range(26,38)
invertSomeChannels()

# Bad channels (no signal or noisy)
bad = [  2, 10, 13, 24, 30 ]
# Variable channels - Check your data and add to bad if appropriate:
bad_maybe = [14, 21, 23, 25, 28 ]
# Channels which sometimes show spikes - despike and/or add to bad if appropriate:
spiky_maybe = [  4,  6, 12, 22, 26 ]
flagC(bad)