Below are six statements regarding events in the brain that produce EEG waves. Three of the statements are TRUE and the rest are FALSE. 1 mark for each correct statement selected. Excitatory brain activity always produces positive EEG waves. EEG waves can be caused by excitatory, but not inhibitory brain activity. EEG waves are mainly associated with ion flow caused by post-synaptic potentials. EEG detects signals from ions crossing the membrane of pre-synaptic neurons. EEG detects signals from ions moving outside post-synaptic neurons. All other things being equal, EEG amplitude is greater when brain activity is synchronous than when it is asynchronous