eeg

• measures electrical activity with brain via electrodes that are fixed to an individuals skull using cap. represents brain activity via waves generated from action from neurons. used as diagnostic tool for unusual arrithmic patterns of activity
• +useful studying the stages of sleep and diagnosis of conditions such as epilepsy characterised by random bursts of energy which is easily detected on a screen. has high temporal resolution meaning that it shows real time activity of these bursts of energy accurately. therefore it has real world application
• -lies in the nature of info received signal not useful in pinpointing the actual source of neural activity therefore it does not allow for localisation. further suggesting that it has low spatial resolution.