Magnetoencephalography abnormalities in adult mild traumatic brain injury: A systematic review

•Magnetoencephalography has higher sensitivity than clinical imaging to detect abnormalities in mild traumatic brain injury•Excess resting state low frequency power is consistently detected following mild traumatic brain injury.•There are widespread magnetoencephalography connectivity changes following mild traumatic brain injury.•Machine learning techniques generate high classification accuracy when analysing magnetoencephalography data.•Currently there is not enough evidence for routine clinical use of magnetoencephalography in mild traumatic brain injury