Thursday, April 17, 2008

Earlier entries are usually crossed out since he forgets having made an entry within minutes and dismisses the writingsalthough he acknowledges his own handwriting he doesnt know how the entries were made or by whom Wishing to record the important life event of waking up for the first time he still writes diary entries as of more than two decades after he started them

Wearing can learn new practices and even a very few factsnot from episodic memory or encoding but by acquiring new procedural memories through repetition. For having watched a certain video recording multiple times on successive days he never had any memory of ever seeing the video or knowing the contents but he was able to anticipate certain parts of the content without remembering how he learned them.

His wife Deborah has written a book about her husbands case entitled Forever Today.

His story was told in a documentary entitled Equinox Prisoner of Consciousness and then his updated story was retold in the ITV documentary The Man with the Second Memory although Wearings short term memory can span much longer than that.

He also appears in the documentary series Time where his case is used to illustrate the effect of losing ones perception of time.

His story was also told in episode Memory and Forgetting on the show Radio Lab on New York Public Radio WNYC. The show is available online at WNYC Radio Lab and via podcast through iTunes.

Cognitive neuroscience
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Cognitive neuroscience is an academic field concerned with the scientific study of biological mechanisms underlying cognition with a specific focus on the neural substrates of mental processes and their behavioral manifestations. It addresses the questions of how psychologicalcognitive functions are produced by the neural circuitry. Cognitive neuroscience is a branch of both psychology and neuroscience unifying and overlapping with several subdisciplines such as cognitive psychology psychobiology and neurobiology. Before the advent of fMRI cognitive neuroscience was called cognitive psychophysiology. Cognitive neuroscientists have a background in experimental psychology or neurobiology but may spring from disciplines such as psychiatry neurology physics linguistics and mathematics.

Methods employed in cognitive neuroscience include experimental paradigms from psychophysics and cognitive psychology functional neuroimaging electrophysiological studies of neural systems and increasingly cognitive genomics and behavioral genetics. Clinical studies in psychopathology in patients with cognitive deficits constitute an important aspect of cognitive neuroscience. The main theoretical approaches are computational neuroscience and the more traditional descriptive cognitive psychology theories such as psychometr.Phrenology

Main article Phrenology

The first roots of cognitive neuroscience lie in phrenology which was a pseudoscientific theory that claimed that behavior could be determined by the shape of the scalp. In the early th century Franz Joseph Gall and J. G. Spurzheim believed that the human brain was localized into approximately different sections. In his book The Anatomy and Physiology of the Nervous System in General and of the Brain in Particular Gall claimed that a larger bump in one of these areas meant that that area of the brain was used more frequently by that person. This theory gained significant public attention leading to the publication of phrenology journals and the creation of phrenometers which measured the bumps on a human subjects head.

Aggregate field

Pierre Flourens a French experimental psychologist was one of many scientists that challenged the views of the phrenologists. Through his study of living rabbits and pigeons he discovered that lesions to particular areas of the brain produced no discernible change in behavior. He proposed the theory that the brain is an aggregate field meaning that different areas of the brain participated in behavior.

Later localizationists

Studies performed in Europe by scientists such as John Hughlings Jackson caused the localizationist view to reemerge as the primary view of behavior. Jackson studied patients with brain damage particularly those with epilepsy. He discovered that the epileptic patients often made the same clonic and tonic movements of muscle during their seizures leading Jackson to believe that they must be occurring in the same place every time. Jackson proposed a topographic map of the brain which was critical to future understanding of the brain lobes.
Brocas area and Wernickes area.
Brocas area and Wernickes area.

In French neurologist Paul Broca came across a man who was able to understand language but unable to speak. The man could only produce the sound tan. It was later discovered that the man had damage to an area of his left frontal lobe now known as Brocas area. Carl Wernicke a German neurologist found a similar patient except that this patent could speak fluently but nonsensibly. The patient has been a victim of a stroke and could not understand spoken or written language. This patient had a lesion in the area where the left parietal and temporal lobes meet now known as Wernickes area. These cases strongly supported the localizationists views because a lesion caused a specific behavioral change in both of these patients.

In German physicians Eduard Hitzig and Gustav Fritsch published their findings about the behavior of animals. Hitzig and Fritsch ran an electrical current through the cerebral cortex of a dog causing the dog to produce characteristic movements based on where the current was applied. Since different areas produced different movements the physicians concluded that behavior was rooted at the cellular level. German neuroanatomist Korbinian Brodmann used tissue staining techniques developed by Franz Nissl to see the different types of cells in the brain. Though this study Brodmann concluded in that the human brain consisted of fiftytwo distinct areas now named Brodmann areas. Many of Brodmanns distinctions were very accurate such as differentiating Brodmann area from Brodmann area

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