It depends on what you mean by this. Sometimes the doctors have remove the entire half of the brain because of severe seizures. They would not do it if it wasn't ethical.
Szeliga helmut. has written: 'Il ruolo del concetto di persona nel contesto della discussione sulla morte cerebrale' -- subject(s): Brain death, Moral and ethical aspects, Moral and ethical aspects of Brain death, Personalism
FDG- PET scanning is a technique that can provide information about brain metabolism. Another technique for such imaging is SPECT.
EEGs
A brain imaging technique is a method used to visualize and examine the structure and function of the brain. Examples include MRI, CT scan, PET scan, and fMRI. These techniques are valuable in diagnosing neurological disorders, studying brain activity, and understanding the brain's anatomy.
Harry Samuel Novack has written: 'The adaptation for group classroom use of clinical technique for teaching brain injured children' -- subject(s): Brain-damaged children, Education, Transfer of training
MRI
Peter Russell has written: 'The TM technique' -- subject(s): Maharishi Mahesh Yogi, Mahesh Yogi, Maharishi, Transcendental Meditation 'Waking up in time' -- subject(s): Life, Evolution 'From science to God' -- subject(s): Religion and science, Religious aspects, Spiritual life, Consciousness 'The brain book' -- subject(s): Brain, Memory, Neuropsychology, Physiological aspects, Physiological aspects of Memory 'The global brain'
mri
Richard F. Thompson has written: 'The Brainlogy, Primer of 2e' 'Cellular processes and brain potentials' -- subject(s): Electrophysiology, Evoked potentials (Electrophysiology), Technique 'Richard's Collection of White Folks' Soul Food' 'Statistical methods useful in medicine' -- subject(s): Outlines, Statistics as Topic 'Introduction to biopsychology' -- subject(s): Psychobiology 'Learning and Memory' 'Behavioral Neuroscience' 'Electroencephalography and human brain potentials' -- subject(s): Electrodiagnosis, Electroencephalography 'Receptor and effector processes' -- subject(s): Electrophysiology, Psychophysiology, Technique 'Introduction to physiological psychology' -- subject(s): Psychophysiology 'Memory'
PET
James B. McCormick has written: 'Atlas and demonstration technique of the central nervous system' -- subject(s): Autopsy, Brain, Laboratory manuals, Pathology, Spinal cord
The technique of studying the brain involving the electrical activity of the large groups of cortical neurons is calles an EEG. The process of conducting an EEG is to place electrodes on different parts of the scalp and recording the electrical signals.