Two Streams hypothesis

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    Essay On Prosopagnosia

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    Milner and Goodale (2003) showed bilateral lesions where the lateral occipital area (LO) is expected to be. This area has been shown in fMRI studies of healthy participants to have higher levels of activation during tasks involving object recognition. The region of the lateral occipital complex (LOC) has been shown to be differentially responsive to objects specifically. Therefore this case of visual object agnosia, alongside comparing it to other cases has shown that it is likely that the object recognition aspect of visual recognition takes place at least to some extent, in the LO/LOC. Another case of visual agnosia is that seen in patient HJA (Humphreys and Riddoch, 1987). This patient developed bilateral lesions in his ventral visual stream following a stroke. His deficits included loss of colour vision (achromotopsia), prosopagnosia and visual object agnosia. In terms of visual object recognition, his deficits are shown by the fact that during an obhect recognition task, he only correctly identified objects depicted in line drawings correctly 42% of the time. However, it should be noted that he was better at this when recognition involved actual objects (although still at a significantly poorer performance than seen in normal participants). When his identification of objects was correct, it took him much longer than healthy controls, which was taken to be indicative that he is using salient features to identify the object rather than taking in the object as a whole. In…

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    Nequasset Case Study

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    health of the Nequasset lake tributaries as analyzed through chemical and biological parameters as well as physical habitat assessment? What factors, both natural and human-influenced, contribute (positively or negatively) to the health of the Nequasset lake tributaries? Background Information Weather or not we realize it, as people that (presumably) live in the Bath area, the streams that flow into Nequasset are very important to our survival. They are numerous, and flow all over Southern Maine…

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    This laboratory experiment was conducted in Greenfield Station Genesee Creek River to determine the environment’s effect on the amount of diverse biological communities in a lotic river. Shredders are macroinvertebrates that feed on coarse particle organic material (CPOM). Macroinvertebrates usually stay in the same habitat and do not migrate, which may be due to them being trapped or frequently receiving a good source of food. They are also an essential part of the freshwater ecosystem by…

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    Introduction: Urban areas contribute pollutants that wash off of areas that are not native to the area (Sanders, et. Al. 2001). These pollutants caused by urban areas contribute the deterioration of water quality in stream and runs which make up a significant part of the bodies of water in the state of Ohio. Water quality is crucial for the fish and macroinvertebrates species that can sustain a community in that specific body of water, any change in this quality can change the entire diversity…

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    Fish Kill Research Paper

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    This influences fish kill rate because higher oxygen levels in the water means more fish can coexist in the same location. a sudden decrease in oxygen levels and the fish will begin to die off because of lack of oxygen. Two sources influencing the levels of dissolved oxygen include the atmosphere and photosynthesis. The atmosphere provides oxygen for water; it dissolves slowly in the bodies of water. Photosynthesis is a important factor in the role of oxygen because plants take in carbon…

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    Erosion In Vienna

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    Our task was to figure out a way to stop, or decrease, a certain situation that is affecting the water quality of a particular body of water in our neighborhood. The body of water that we will be focusing on today, will be the Foxstone Creek in Vienna Virginia. Although there are many different problems that have occurred in this creek, the problem that we noticed that is the most impactful, is the amount of erosion on the creek. Erosion is the process by which the surface of earth is being…

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    The Meramec River is located in the upper Ozark Highlands in central-eastern Missouri and spans 218 linear miles before discharging into the Mississippi River in St. Louis (Blanc 1999, Thom et al, Figure 1). This watershed is dominated by Oak-Hickory forests and karst topography; and the Meramec River follows a riffle-run pattern of stream flow (Blanc 1999, Thom et al). Before people dominated the landscape, the driving forces of nature shaped the topography and the subsequent ecosystems that…

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    Title: Ecological Interactions of Living Organisms in Beaver Creek Statement of the Problem: How do the organisms in Beaver Creek interact with the biotic and abiotic portions of the ecosystem? The sample was taken from Beaver Creek (a tributary of Tookany Creek) in Glenside, Montgomery County, PA. The pH of the creek was 5.5, and the stream velocity was detectable (greater or equal to walking speed). In the area of collection, the stream width was one meter and the depth was 14 cm. There…

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    Since most of the drumlins are oriented from northwest to southeast it seems apparent that most of the drainage channels would run between the depressions. An example of this would be the watershed that leads into Ives Cove. It passes underneath a trail, through a wetland area, and into a pond near the coast. The drainage channel is fed from two drumlins on both sides and a gully located above the wetland. Current developments near the shoreline seem to influence the stream direction, perhaps…

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    The vibrant colors of magenta and orange filled the body of water by the drop, as it oozed from the rancid, corroded drainage system (Kang 30). The mixing of acidic chemicals created these colors, and produced nasty, murky water. Kang states, “When oil spills occur, the water is coated with a greasy sheen, and ugly, yellow bubbles seem to blister its surface” (30). When looking at photographs of the Yellow River, the waterway is a brownish-red tint, and looks like humans tossed dead carcasses…

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