Dr. Torsten Wiesel, who was half of a long-lived scientific partnership that received a Nobel Prize for explaining how the brain processes signals from the eye to create images of the world, died XXX. He was XXX.
XXX announced his death.
Dr. Wiesel and his collaborator, Dr. David Hubel, shared the 1981 Nobel in Physiology or Medicine with Roger Sperry for discovering ways the brain processes sensory information. Dr. Wiesel and Dr. Hubel focused on the visual system, initially in cats and later in monkeys; Dr. Sperry unraveled the functions of the brain’s left and right hemispheres.
Before Dr. Wiesel and Dr. Hubel started their research in the 1950s, scientists generally believed that the brain functioned like a movie screen, displaying images
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They further discovered that the cells were specialized—some preferred horizontal lines; others, vertical lines or sharp angles.
During their 20-year collaboration, Dr. Wiesel and Dr. Hubel also showed that sensory deprivation early in life can permanently alter the brain’s ability to process images, causing vision impairments. Their work was the first to demonstrate the existence of a “critical period” during which the brain must develop crucial connections to the eye.
Researchers have since found evidence of “critical periods” in hearing, language acquisition and smell.
“David Hubel and Torsten Wiesel provided a quantum step in our understanding of the visual system,” Robert H. Wurtz, a neuroscientist, wrote in a review article about their work.
Their initial discovery about how vision works resulted from luck. The scientists had spent days trying to nudge brain cells in cats to respond to dark and light spots. They waived their arms, and mostly as a joke, showed the cats images of glamorous women from
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Before Dr. Wiesel’s and Dr. Hubel’s research, physicians removed cataracts from infants between ages 6 months and 24 months with poor results.
Dr. Wiesel and Dr. Hubel were recruited with their mentor, Dr. Kuffler, to Harvard Medical School in 1959. Dr. Wiesel was named a full professor at Harvard in 1964 and he became chair of the medical school’s department of neurobiology in 1973. Dr. Wiesel was soon immersed in administrative duties; Dr. Hubel started traveling to give lectures about their work. Their research, now focused on the higher visual areas of the brain, faltered. Soon, they parted ways.
“David and I never spent much time together outside the lab; what developed between us, our private dialogues, took place while we carried out our experiments,” Dr. Wiesel wrote. “When those explorations stalled, when the wonder faded, so did our collaboration.” In 1983 he moved to Rockefeller University to establish a neurobiology lab and in 1991 he was named president of Rockefeller. Before stepping down in 1998, he formed six new research institutes and an affiliation with the Aaron Diamond Aids Research Center. After that, he worked to expand training opportunities for young scientists in the U.S. and
After being shown a picture of an elephant they eye will take the light that is reflected from the object and it will enter the eye through the pupil. Then the light will be focused by the cornea and the lens to form a sharp image of the elephant in the retina. The retina is the network of neurons that cover the back of the eye and contains the visual receptors for a person vision. The visual receptors are made up of cones and rods that contain light sensitive chemicals called visual pigments. Visual pigments reacht to light and cause a triggered electrical signals to occur. These electrical signals will then flow through a network of neurons and this network of neurons is what makes up a persons retina. After the flow through the network of neurons occurs the electrical signals will emerge from the back of the eye in the area
Elie Wiesel also became a Judaic Studies professor in the New York City College. For his humanitarian work, Wiesel was appointed the Noble Peace Prize in 1986. Prior to this he was also named Chairman of the US Holocaust Memorial Council in 1978. Elie Wiesel, a war survivor, educator, humanitarian, and author lives till this day with his
"Conscience is a man's compass" (Van Gogh). The very existence of teenagers renders Vincent Van Gogh's metaphor invalid, as described in Elizabeth Kolbert's "The Terrible Teens". By appealing to authority, she adds a sense of credibility and legitimacy to her writing. While her use of metaphorical expressions aids the reader in understanding the adolescent mind from a neurological standpoint by evoking imagery and connections. Elizabeth Kolbert's practical use of methods of development and rhetorical devices are highly effective in strengthening the central idea of her essay.
Elie Wiesel, a great person, a great character, and most of all a great survivor. Elie Wiesel or Eliezer as he refers to himself in the book Night is just an amazing person. I just cannot imagine what he went through according to Night and his experiences. One of the most vivid scenes of his book night is when he and the rest of the cap was sent on a long walk to another camp. As it says in the book they were forced to march in the thigh deep snow for days without food or water. I just have so much respect for that guy. For him not to give up everything and say i’m done it is just remarkable. After the holocaust was over Wiesel moved to New York in 1955 and became a U.S. citizen in 1963. He met Marion Rose, also a Holocaust survivor, in New
Elie Wiesel is the author of more than 60 books of fiction and non-fiction. He wrote A Beggar in Jerusalem, The Testament, 2 memoirs and lots of others. Lots of his books have won some kind of award, which is amazing. He was
The brain is considered the most complex organ in the body. It is responsible for controlling motor function, the body’s ability to balance and the ability to translate information sent to the brain by sensory organs. The mind is described as the faculty of consciousness and thought. It’s where our feeling and emotions originate from and defines who we are as a person. The brain is composed of the visual cortex, which is responsible for processing visual information. In blind individuals the feature that makes up visions still exists in the visual cortex. These features are now used to process information received from the other senses. However, blind individuals are able to view the images because what’s in their mind.
Dr. Benson was born in Yonkers, New York in 1935. He attended Wesleyan University and graduated with his B.A in Biology in 1957. He went on to attend Harvard medical school graduating in 1961 with his M.D. Dr. Benson went in to practice but followed his love for research and was part of many ground breaking research studies in what would be referred to as the PNI field later.
The 20th century was a time of brutal wars and eradication of joy. On April 12, 1999, Elie Wiesel stepped up to the podium, reflecting the violent times as they were months before entering a new century. Wiesel knew very well that the uncountable tragedies had to change, and each individual must exercise his or her own contributions in the face of justice and humanity. His devastating experiences and tragic realizations produced a voice that carried around the world, revealing the fundamental structure of humanity.
And he did, The kid whose name he can barely remember to be Abberton, but not being called that for around 1-2 years he fully remembers the number he was given “A-7713” (Wiesel, 42) After another half hour of taking with Abberton I decided to leave him to rest since he seemed “In good health” (Wiesel, 31) compared to the others so I moved on.
* to explain the connections of the elements of consciousness to the nervous system. (New World Encyclopaedia 2008)
Gibson’s and Gregory’s theories of perception both suggest that eye-retina is important for perception. The both believe that without eye-retina, a person will not be able to see. This is a common view of both of the theories of perception. The idea is supported by the case of SB. SB was a man who had been blind from birth due to cataracts. When he was 52, he had an operation which restored his sight and hence he could see. Thus, this case has shown the importance of eye-retina for things to be perceived. And therefore, supports both of theories of perception which eye-retina is essential for perception.
As a medical practitioner, I was always fascinated by the complexities of the human nervous system. A few years later, during my neurology residency training, I developed special interests in the field of neurodegenerative disorders and dementias. These are largely non-curable disorders
However, amblyopia is increasingly becoming recognised as a binocular disorder. This emerging theory has driven the development of binocular treatments, some of which have yielded positive results surpassing those achieved by traditional methods; (Kelly, Jost and Dao 2016; Jost, Kelly, Leffler, Beauchamp, Birch, 2016; Birch et al, 2015; Li et al 2014). Importantly, findings demonstrate the potential plasticity of the adult brain beyond the hypothesised critical period for visual development, Tailor et al., (2016), Nancy (2015). Critically, binocular treatments are producing encouraging improvements among adult amblyopes Vedamurthy, Nahum, Bavelier and Levi (2015), Li et al., (2013), posing important implications for clinical practice. The aim of this essay is to explain amblyopia with reference to ‘strabismus and anisometropia’. To discuss traditional methods and newly developed binocular treatments that aim to address the binocular dysfunction of the amblyopic brain. Amblyopia occurs during the first 3 years of life Levi et al (2015) and doesn’t develop beyond the age of 8yrs supporting the ‘critical period’ of susceptibility. However, this doesn’t evident a theory for a null treatment effect among amblyopes beyond this period.
A time where people were forced to leave their homes and everything they had in possession. This is something that happens to Elie Wiesel author and main character of NIGHT. Elie and his family are from jewish descent and are dehumanized by the Germans and forced into labour camps to work. They never knew what dangers they had ahead of them always having ignorance only to face the consequences. To lose and to have everything only to be gone in a second never to be returned. Throughout his journey he finds himself powerless but only to find he stills has his dignity. He even finds his humanity for his father for the last person that was there to support him and care for him.
Thank to my undergraduate education in biology at the Complutense University of Madrid, I gained a solid background in cell and molecular biology, biomedicine and neurobiology. My interest in the study of the functioning of the brain and, at the same time, my concern for the relative lack of knowledge of major neurological disorders such as epilepsy prompted me to extend my academic training in neurosciences at the VU University Amsterdam, where I benefited of a highly international and intellectually challenging environment. Due to my participation in numerous seminars, journal clubs and poster markets, I have developed a strong