Electroencephalography is the neurophysiologic measurement of the electrical activity of the brain by recording from electrodes placed on the scalp, or in the special cases on the cortex. The resulting traces are known as an electroencephalogram (EEG) and represent so-called brainwaves. This device is used to assess brain damage, epilepsy and other problems. In some jurisdictions it is used to assess brain death. EEG can ...

Including:

Electroencephalography - Methods Electroencephalography - Wave types Electroencephalography - History Electroencephalography - Notes

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See also:

Slow Wave Sleep, Slow Wave Sleep - Electroencephalographic Characteristics, Slow Wave Sleep - Characteristics

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Their research works by examining the output of hardware random number generators located around the world. The remote devices have been dubbed Princeton Eggs, where EGG is short for electrogaiagram, a play of words on electroencephalogram [1]. The current theory holds that events that have a significant human impact affect the randomness of these generators in a statistically significant way. Roger D. Nelson started by reviewing two decades of experiments from the Princeton Engineering Anomalies Research Lab (PEAR) which repea ...

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Global Consciousness Project, Global Consciousness Project - Research, Global Consciousness Project - Criticism

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Please remove this notice after the article has been expanded. Details are on this talk page or at Wikipedia:Requests for expansion. In humans, a theta wave is an electroencephalogram pattern normally produced while awake but relaxed or drowsy. The pattern has a frequency of 3.5 to 7.5 Hz. Theta waves are strong during internal focus, meditation, prayer, hypnosis, and spiritual awareness. See also. Electroencephalography Delta wave Alpha wave SM ...

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Headaches can serve as warning signals of more serious disorders. This is particularly true for headaches caused by traction or inflammation. When an underlying cause is suspected for the headache, further diagnostic tests will be done. A test called an electroencephalogram (EEG) may be given to measure brain activity. EEGs can indicate a malfunction in the brain, but they cannot usually pinpoint a problem that might be causing a headache. A physician may suggest that a patient with unusual headaches undergo a computed tomographic (CT) scan ...

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Headache, Headache - Pathophysiology, Headache - Types, Headache - Causes, Headache - Diagnosis, Headache - Treatment

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A typical experiment that demonstrates the N400 might be set up as follows: The subject is presented a sentence one word at a time, and advances through each word by pressing a key. Some sentences will be semantically unmarked, e.g., "I enjoy walking in the evenings" Some sentences will have unexpected or deviant ends, e.g., "I like my coffee with cream and dog" (a control condition) By recording the subject's neural activity using an Electroencephalogram and comparing the effects between the expectabl ...

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N400, N400 - A typical experiment, N400 - Scope of the N400 - effect and the underlying process, N400 - Processing costs, N400 - Music and N400, N400 - N400 and pictures

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Benjamin Libet is a researcher in the physiology department of the University of California, San Fransisco, and is a pioneering scientist in the study of human consciousness. In the 1970's, Libet researched neural activity and sensation thresholds. His initial investigations involved determining how much activation at specific sites in the brain would trigger artificial somatic sensations, relying on routine psychophysical procedures. This work soon crossed into the realm of investigation of human consciousness; his most famous and co ...

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Benjamin Libet - Volitional Acts and Readiness Potential Benjamin Libet - The Implications of Libet's Experiments

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The auditory system is the sensory system for the sense of hearing. On its path from the outside world to the forebrain, sound information is preserved and modified in many ways. It changes media twice, first from air to fluid, then from fluid to action potentials. Auditory system - Ear. See Main Article Ear Auditory system - Outer ear. The folds of cartilage that comprise the lay conception of the ear are called the pinna. Sound waves change when they hit t ...

Including:

Auditory system - Ear
Auditory system - Outer ear Auditory system - Middle ear Auditory system - Inner ear Auditory system - Hair cell Auditory system - Neuron to hair relationship
Auditory system - Neural audition circuit
Auditory system - Overview Auditory system - The cochlear nucleus Auditory system - Superior Olivary Complex Auditory system - Inferior Colliculus Auditory system - Medial Geniculate Nucleus Auditory system - Primary Auditory Cortex
Auditory system - Bibliography Auditory system - See Also

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The Global Consciousness Project, also called the EGG Project, is one of the most significant of current research projects into parapsychology. Based at Princeton, the project researches into the theory that the human consciousness may create an external field which is not detectable via conventional means. Working on the assumption that while the field of an individual's consciousness is not measurable, the combined field of a large number of people who are experiencing similar thoughts or feelings ...

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Global Consciousness Project - Research Global Consciousness Project - Criticism

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This article is about epilepsy in humans. For information on epilepsy in other animals, see Epilepsy (Animals). Epilepsy (often referred to as a seizure disorder) is a chronic neurological condition characterized by recurrent unprovoked seizures. The condition is named from the Greek epilepsis ("a taking hold of or seizing"). It is commonly controlled with medication, although surgical methods are used as well. Epilepsy - Causes. All the causes (or etiologies) of epilepsy are not ...

Including:

Epilepsy - Causes Epilepsy - Diagnosis Epilepsy - Types of seizure Epilepsy - Seizure syndromes Epilepsy - Treatment
Epilepsy - Responding to a seizure Epilepsy - Pharmacologic treatment Epilepsy - Surgical Treatment Epilepsy - Other Treatment
Epilepsy - History and Stigma Epilepsy - Legal implications Epilepsy - Important investigators of epilepsy

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A headache (medically known as cephalgia) is a condition of mild to severe pain in the head; sometimes upper back or neck pain may also be interpreted as a headache. Headache is the second-most common form of local pain. (The most common is molar pain, i.e. toothache in one or more of the flat-crowned teeth used for grinding food.) Headaches have a wide variety of causes, ranging from eyestrain to inflammation of the sinus cavities to life-threatening conditions such as encephalitis, brain cancer, meningitis, and cerebra ...

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Headache - Pathophysiology Headache - Types Headache - Causes Headache - Diagnosis Headache - Treatment

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Some medical tests are parts of a simple physical examination which require only simple tools in the hands of a skilled practitioner, and can be performed in an office environment. Some other tests require elaborate equipment or the use of a sterile operating theatre environment. Some tests require samples of tissue or body fluids to be sent off to a pathology lab for further analysis. Some simple chemical tests, such as urine pH, can be measured directly in the doctor's office. Most medical tests are conducted on the living; however, some of these tests can also be carried ou ...

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Medical test, Medical test - Overview, Medical test - Consulting room tests, Medical test - More invasive examinations requiring sterile procedures, Medical test - Requiring laboratory analysis, Medical test - Requiring microscopy, Medical test - Requiring elaborate medical equipment

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There are four types of headache: vascular, muscle contraction (tension), traction, and inflammatory. Vascular The most common type of vascular headache is migraine. Migraine headaches are usually characterized by severe pain on one or both sides of the head, an upset stomach, and, at times, disturbed vision. Women are more likely than men to have migraine headaches. After migraine, the most common type of vascular headache is the toxic headache produced by fever. Other kinds of vascular headaches ...

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Headache, Headache - Pathophysiology, Headache - Types, Headache - Causes, Headache - Diagnosis, Headache - Treatment

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Hannibal Lecter - Early life and murder spree. Hannibal Lecter was born in Lithuania in 1938 to wealthy parents. His father was a count, his mother a descendent of the famous Visconti family of Milan. In Hannibal he is said to be a cousin of the artist Balthus. He had a younger sister named Mischa. When Lecter was six, a group of German deserters retreating from Russia shelled his family's estate, killing his parents and most of the servants. Lecter, his sister, and other local children were rounded ...

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Hannibal Lecter, Hannibal Lecter - Biography, Hannibal Lecter - Early life and murder spree, Hannibal Lecter - Helping the FBI, Hannibal Lecter - Winning Clarice, Hannibal Lecter - Appearance, Hannibal Lecter - Lecter as Cultural Figure, Hannibal Lecter - Related References

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Hypertonic patients may display a variety of symptoms that indicate decreased muscle tone. Motor skills delay is often observed, along with hypermobile or hyperflexible joints, drooling and speech difficulties, poor reflexes, decreased strength, decreased activity tolerance, rounded shoulder posture, with leaning onto supports, and poor attention and motivation. The extent and occurence of specific symptoms depends upon the age of the patient, the severity of the hypotonia, the specific muscles affected, and sometimes the underlying cause. For instance, some hypertonics may experience constipation ...

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Hypotonia, Hypotonia - Symptoms, Hypotonia - Developmental Delay, Hypotonia - Muscle Tone vs. Muscle Strength, Hypotonia - Diagnosis, Hypotonia - Other Names for Hypotonia, Hypotonia - Underlying Causes of Hypotonia, Hypotonia - Prognosis and Treatment, Hypotonia - Breastfeeding, Hypotonia - Support Organizations, Hypotonia - Online Message Boards

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Epilepsy is usually treated with medication prescribed by a physician; primary caregivers, neurologists, and neurosurgeons all frequently care for people with epilepsy. In some cases the implantation of a stimulator of the vagus nerve, or a special diet can be helpful. Neurosurgical operations for epilepsy can be palliative, reducing the frequency or severity of seizures; or, in some patients, an operation can be curative. Epil ...

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Epilepsy, Epilepsy - Diagnosis, Epilepsy - Causes, Epilepsy - Normal provocants, Epilepsy - Types of seizure, Epilepsy - Seizure syndromes, Epilepsy - Treatment, Epilepsy - Responding to a seizure, Epilepsy - Pharmacologic treatment, Epilepsy - Surgical Treatment, Epilepsy - Other Treatment, Epilepsy - History and Stigma, Epilepsy - Legal implications, Epilepsy - Important investigators of epilepsy, Epilepsy - Notes and references

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The brain tissue, the dura mater and the skull bones are not sensitive to pain, because they lack pain-sensitive nerve fibers. Several areas of the head can hurt, including a network of nerves which extends over the scalp and certain nerves in the face, mouth, and throat. The basal part of the meninges and the great blood vessels, arteriae as well as sinuses, do have pain perception. Headache often results from traction to or irritation of the meninges and blood vessels. Also sen ...

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Headache, Headache - Pathophysiology, Headache - Types, Headache - Causes, Headache - Diagnosis, Headache - Treatment

Read more here: » Headache: Encyclopedia II - Headache - Pathophysiology

ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R00-R09 Circulatory and respiratory systems. (R00) Abnormalities of heart beat (R000) Tachycardia, unspecified (R001) Bradycardia, unspecified (R002) Palpitations (R008) Other and unspecified abnormalities of heart beat (R01) Cardiac murmurs and other cardiac sounds (R010) Benign and innocent cardiac murmurs (R011) Cardiac murmur, unspecified (R ...

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ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R00-R69 - Symptoms and signs, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R00-R09 Circulatory and respiratory systems, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R10-R19 Digestive system and abdomen, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R20-R23 Skin and subcutaneous tissue, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R25-R29 Nervous and musculoskeletal systems, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R30-R39 Urinary system, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R40-R46 Cognition perception emotional state and behaviour, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R47-R49 Speech and voice, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R50-R69 General symptoms and signs, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R70-R99 - Abnormal clinical and laboratory findings not elsewhere classified, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R70-R79 On examination of blood without diagnosis, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R80-R82 On examination of urine without diagnosis, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R83-R89 On examination of other body fluids substances and tissues without diagnosis, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R90-R94 On diagnostic imaging and in function studies without diagnosis, ICD-10 Chapter R: Symptoms signs and abnormal clinical and laboratory findings - R95-R99 - Ill-defined and unknown causes of mortality

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Original airdate: September 29, 2005 Directed by: Ken Olin Written by: Alison Schapker, Monica Breen Sydney and Vaughn survive the car crash that concluded the fourth season; however, Vaughn is taken away in a helicopter by an unknown group posing as an emergency medical team while Sydney runs away. Upon returning to Los Angeles, Sydney learns that Vaughn is under suspicion of being a doub ...

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Alias episodes Season 5, Alias episodes Season 5 - Prophet Five, Alias episodes Season 5 - ...1..., Alias episodes Season 5 - The Shed, Alias episodes Season 5 - Mockingbird, Alias episodes Season 5 - Out of the Box, Alias episodes Season 5 - Solo, Alias episodes Season 5 - Fait Accompli, Alias episodes Season 5 - Bob, Alias episodes Season 5 - The Horizon

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Hypertonic patients may display a variety symptoms that indicate decreased muscle tone. Motor skills delay is often observed, along with hypermobile or hyperflexible joints, drooling and speech difficulties, poor reflexes, decreased strength, decreased activity tolerance, rounded shoulder posture, with leaning onto supports, and poor attention and motivation. The extent and occurence of specific symptoms depends upon the underlying cause, and which muscles are involved. For instance, some hypertonics may experience constipation ...

See also:

Hypotonia, Hypotonia - Symptoms, Hypotonia - Developmental Delay, Hypotonia - Muscle Tone vs. Muscle Strength, Hypotonia - Diagnosis, Hypotonia - Other Names for Hypotonia, Hypotonia - Underlying Causes of Hypotonia, Hypotonia - Prognosis and Treatment, Hypotonia - Breastfeeding, Hypotonia - Support Organizations, Hypotonia - Online Message Boards, Hypotonia - Articles

Read more here: » Hypotonia: Encyclopedia II - Hypotonia - Symptoms