Man dreams in colour for first time during cancer radiotherapy. There is some evidence that radiation can affect electrical brain activity. People exposed to radiation during the Chernobyl disaster, for instance, showed unusual electrical brain activity on electroencephalography (EEG) tests.

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Man dreams in colour for first time during cancer radiotherapy. There is some evidence that radiation can affect electrical brain activity. People exposed to radiation during the Chernobyl disaster, for instance, showed unusual electrical brain activity on electroencephalography (EEG) tests.