Brain
The brain is the part of the central nervous system that is the center for regulation and control of the body.

The workings of the brain 

The brain is made up of neurons that make use of chemical reaction and electricity by way of neurotransmitters to function. Each brain has a unique circuitry pattern.

The mind is also the house of consciousness, subconscious, metaconscious, thought, memory, emotion, the ability to dream and the powers of extrasensory perception by way of psionic energy.

See: Emergent property

According to Doctor Leonard McCoy, by the 23rd century, medicine had learned to tie into every human organ except for the brain, which was what life was all about. ()

According to Doctor Beverly Crusher in the 24th century, headaches were once quite common in the days before the brain was charted and the nature of pain was understood. ()

The brain can have extremely powerful effects on a person's body. Under certain circumstances, medical patients have been known to alter their own blood pressure, lower their body temperature and even manifest a tumor in response to psychological stimuli. The Clown, an artificial being which depended on input from living brains, used this to his advantage in keeping several members of Viorsa's species, and later Harry Kim and B'Elanna Torres, captive. When an individual tried to leave the Clown's artificial environment, he would begin to raise their noradrenaline levels by pretending to cut off their heads with his guillotine. With enough , he could induce a heart attack and literally scare the individuals to death. (; )

A hard blow to the neck from an opponent in a boxing match will collapse the carotid artery and stop the flow of blood to the brain. ()

Dopterians, Breen and Ferengi have a four lobed brain structure, which can not be read by telepathic species. (; )

In many, but not all species, hallucination is a sign that the brain is malfunctioning. Many cultures purposely alter their perceptions of reality for spiritual or recreational reasons. The Denobulans, for example, hallucinate to reduce stress. Some Native American cultures self-induce hallucinations to experience a vision quest.

The Banea have the ability to place memory engrams inside a person's brain. This method is incompatible with Human brain physiology. ()

Parts of the brain 
 See Parts of the brain

Energies of the mind 
Bio-neural energy
Electricity
Electropathic residue
Neural energy
Neurogenic energy
Psionic energy
Theta waves

Brain technologies 

Altonian brain teaser
Cortical array
Cranial implant
Neural network
Neuro-stabilizer
Neurogenic pulse
Neurolytic emitter
Synaptic processor
Termination implant

Brain scanners and probes 
Hyperencephalogram
Mind scanner
Neural monitor
Neuralyte probe
Psycho-tricorder
Romulan mind probe

Mind control technology 
Ktarian game
Neural neutralizer 
Neurogenic field 
Thought maker

Technologies of repair 
Cortical analeptic
Cortical stimulator 
Neural transducer

Interface and communication technology 
Cortical implant 
Cortical node 
Cortical processing subunit 
Neural interface 
Neural processor 
Neural transceiver
Neurogenic interface 
Psi-wave device
Synaptic stimulator 
Synaptic transceiver

Procedures for the brain 
Accelerated critical neural pathway formation
Hyperencephalogram
Hypothalamic series 
Neural link
Neurogenic restructuring
Neurographic scan
Neurological analysis

In 2253, Leonard McCoy developed a medical procedure involving brain tissue engrafting. () 

Spock's brain was surgically removed by the Eymorg in 2268. Every nerve ending in the brain had been neatly sealed; nothing ripped nor torn, and no bleeding, which Doctor Leonard McCoy considered a medical miracle. ()

Julian Bashir performed brain surgery on Bareil Antos in 2371. Parts of his brain were replaced artificially. It allowed Bareil to live long enough to help Winn Adami sign the Bajoran-Cardassian Treaty. ()

Mental Hospitals and Institutes 
See: Mental Hospitals and Institutes

Disorders of the brain

Psychological disorders 
 Claustrophobia
 Holo-addiction
 Hypochondria
 Lacunar amnesia
 Mass insanity
 Multiple personality disorder
 Nervous breakdown
 Nihiliphobia
 Polywater intoxication
 Schizophrenia
 Space sickness
 Transporter phobia
 Xenophobia

Neurological trauma and disorders 
 See: Neurological trauma and disorders

Mind altering substances and phenomenon 
Chaotic space
Interphase
Meditation
Neural parasites
Orb
Polywater
Psychotropic drugs
Alcohol
LSD
Tropolisine
Telepathic memory invasion
Truth serum
Vision quest

Many cultures purposely alter their perceptions of reality for spiritual or recreational reasons. Religious examples include Bajorans, Nechani, Vulcans and Human cultures such as Native Americans.

Other brains 
Hive mind
Microbrain
Positronic brain

External links 
 
 

de:Gehirn
Organs