Lateral geniculate nucleus

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    Neuroanatomy Assignment

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    [2] The main function of the thalamus is relaying and integrating information to and from the cerebral cortex using the many nuclei that lie within it. [10] Another vital role of the thalamus is to maintain consciousness of the animal. [11] This would account for the reduced mental status of the Labrador in this case, as the fleshy matter was located here. The lateral geniculate nuclei (LGN) are ‘olive’ like in shape and are found either side in the posterior thalamus. They receive input via the optic tract, which is the link between the thalamus and the LGN. [12] The input comes from both eyes and projects information to the visual cortex in the occipital lobe. [2] The medial geniculate nucleus is also found in the thalamus. It is responsible for auditory pathways. It receives auditory signals from both ears and projects them to the primary auditory cortex. Having a tumorous mass around this structure could allow this relay of information to be disrupted and would explain the non-existent or aggressive response of the dog to its owner.…

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    that auditory areas in the superior temporal sulcus demonstrate an enhanced response to emotional prosody (Sander, Grandjean, Pourtois, Schwartz, Seghier, & Scherer, 2005; Sander, Grandjean, Pourtois, Schwartz, Seghier, Scherer, & Vuilleumier, 2005; Grandjean, Sander, Pourtois, Schwartz, Seghier, Scherer, & Vuilleumier 2005). Sander et al. (2005) considered that voice and face perception might be similar in terms of neural organization; Grandjean et al. (2005) verified this, as angry prosody…

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    Attention In MT-MST

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    the voxels that were considerably more active when the visual stimulus included motion than when it contained solely stationary dots. Therefore, the area was selected based on changes due to the stimulus, completely independent of attention. The researchers used the Kolmogorov-Smirnov test once again for Experiment 2 in order to compare the MR signal during time points when the stimulus contained motion to time points when there was no motion. They then used neuroimaging and anatomical studies,…

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    Blindsight Essay

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    The Significant Impact of Blindsight Mihaly Csikszentmihalyi once said, “Control of consciousness determines the quality of life.” The idea that we are in control of our own consciousness, whether we are consciously aware of it or not, is a fascinating one; and it is even more fascinating when you take into consideration phenomenon like blindsight. Blindsight, according to Dictionary.com, is “the ability to respond to visual stimuli without having any conscious visual experience; it can occur…

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    Epigenetics

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    Introduction Epigenetics, “above-genetics” is concerned with the mechanism that underlies developmental processes and canalization that are neither necessarily transmitted nor brought about by changes in the DNA sequence in both eukaryotes and prokaryotes. At the cellular level it focuses on the developmental process that leads to cell determination and cell differentiation (Jablonka & Raz, 2009). Narrowly defined, epigenetics refers to the scientific approach concerned with changes in the…

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    Fossils Chapter Summary

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    Fossils are a large part of discovering about the past, but to understand how fossils change over time, genes also need to be investigated. These investigations are just as important as the fossils, because of how DNA can be tested through the use of embryos. During Shubin’s expeditions into the Artic, one researcher, Randy Dahn, was experimenting with the embryos of sharks and skates. He would use various chemicals on the embryos, and examine the results to see what changes that the chemicals…

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    Frequent Flyer Case Study

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    regardless of the fairness. In the U.S. when an even split was made, the partner would always accept, but when it was anything less than half, the partner almost always denied it. They would rather refuse the money all together than have the splitter benefit unfairly. Contrarily, the Machiguenga tribe accepted any amount of valuables no matter how unfair the split was. The majority of splits were an 85 to 15 percentile, favoring the splitter. But the Machiguenga partner had a mind set that “any…

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    Mok & Lau (2003) explain the pathophysiology as Defective immune regulatory mechanisms, such as the clearance of apoptotic cells and immune complexes, are important contributors to the development of SLE. The loss of immune tolerance, increased antigenic load, excess T cell help, defective B cell suppression, and the shifting of T helper 1 (Th1) to Th2 immune responses leads to B cell hyperactivity and the production of pathogenic autoantibodies. Systemic lupus erythematosus (SLE) is a…

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    Cell Theory Lab Report

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    Cells are the functional units of life. All biochemical processes are carried out by cells. 5. Groups of cells can be organized and function as multicellular organisms 6. Cells of multicellular organisms can become specialized in form and function to carry out subprocesses of the multicellular organism. 1.2.1 The Cell Membrane: 1. A cell cannot survive if it is totally isolated from its environment. The cell membrane is a complex barrier separating every cell from its external environment.…

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    The Violinist Thumb is a book by Sam Kean that describes how DNA, and heredity function. The book is divided into four parts. Part one describes the basics of heredity. It goes into detail about base pairs, amino acids, RNA, and the such to give readers an overview of the system of heredity. One of my favorite stories from part one is the story of Tsutomu Yamaguchi, who survived both atomic explosions in Japan during World War II, and lived into his nineties. Part two discusses adaptations,…

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