
4 0 c m
32cm
actual image size: 24cm x 32cm
Description
'Twenty minutes with the brainwave machine'. Photograph shows a brainwave recording in progress at London Hospital. The patient lies on a couch and is required to close her/his eyes in order to relax the brain. The 20 minute session is a humdrum siesta for the patient, during which 50 feet of recording is taken. The passage of each second is marked on the broad graph-tape'.
Image Details
Image Ref.
10250359
© Daily Herald Archive / National Science & Media Museum / Science & Society Picture Library