Receptive field Essays

  • Why is Hubel and Wiesel's Description of the Classical Receptive Field Inadequate for an Understanding of Visual Perception?

    1757 Words  | 4 Pages

    Hubel and Wiesel’s research surrounding area V1 of the primary visual cortex provided one of the first descriptions of the receptive fields in mammals. By flashing various lines along the receptive field, Hubel and Wiesel were able to classify cortical neurons into two distinct groups; simple and complex (Hubel & Wiesel, 1963). The use of manually mapping the receptive fields with simple dots, lines and edges meant that they not only discovered orientation tuning in single neurons, but also described

  • Why is Hubel and Wiesel's Description of the Classical Receptive Field Inadequate for an Understanding of Visual Perception?

    2170 Words  | 5 Pages

    visual perception; criticism of the hierarchical nature of the theory; an alternative theory of receptive-field cells as spatial frequency detectors; and the possibility of reconciling these two theories with reference to parallel processing. Barlow (1953) first postulated the existence of feature-sensitive ganglion cells in a frog’s retina based on an inhibitory-surround structure of the receptive field. He maintained that the “on-off” units of these cells triggered by the presence of a particular

  • Visual Information and Sound Locations

    1192 Words  | 3 Pages

    Introduction Scientists have researched the integration of visual and auditory spatial information for many decades. Through this research, the scientific community has acquired knowledge pertaining to the benefit that the brain receives from combining both visual and spatial information. The benefit from the contribution of both modalities in terms of spatial localization results because both audition and vision provide distinctive and complimentary information to the brain. Although scientific

  • Two Point Discrimination Test

    762 Words  | 2 Pages

    depends on the size of the receptive fields located on the somatosensory neurons. However receptive fields for other types of sensations are located elsewhere. For vision we find that the receptive fields are located inside the visual cortex, and for hearing we find receptive fields in the auditory cortex. The ability for the body to discriminate two points depends on how well that area of the body is innervated with neurons; and thus conferring to the size of the receptive fields (Haggard et al. 2007)

  • Wernicke's Aphasia Disorder

    1881 Words  | 4 Pages

    reading” (“Wernicke’s” n.p.). Wernicke’s aphasia can also be known as sensory aphasia, fluent aphasia, or receptive aphasia. It is a type of aphasia that is caused by damage to Wernicke’s area in the brain, in the posterior part of the temporal lobe of the left hemisphere. This area of the brain contains motor neurons responsible for the understanding of spoken language and is believed to be the receptive language center (“Rogers” n.p.). Wernicke’s aphasia can be most efficiently defined as a fluent language

  • Field Notes From a Catastrophe by Elizabeth Kolbert

    1701 Words  | 4 Pages

    Part 1: Summary In this book, Kolbert travels to many places to find out what is happening with global warming. Quite often she ran into the same fear at the places she went, the fear for loss before the next generation. When she went to Alaska, many people were fleeing from their homes because the sea ice surrounding them, creating a buffer zone for storms, was melting and that was causing houses to just be swept away. A man in Iceland who has monitored glaciers predicted that by the end

  • Physical Database Design and Performance

    912 Words  | 2 Pages

    the most basic measures that most be examined and planned involves the smallest units within the database, the fields. The fields are derived from the simple attributes that were defined in the logical data model. A few decisions need to be made regarding each of these individual fields. First what type of data is going to be storied in them? The data type that is assigned to each field should be able to accurately represent every possible valid value, while limiting invalid values as much as possible

  • Morals of The Milagro Beanfield War

    1154 Words  | 3 Pages

    in the hot arid state of New Mexico. Joe Mondragon, a man of his mid 30's, provided for his wife and two kids. He was a farmer, but a farmer with no fields. During the 1935 Interstate Water Compact, much of the water was transferred to big-time farmer's fields, like Ladd Devine. This would not have been a problem except for the fact that Joe's field was located on the west side of Milagro and all of the water flowed to the southeast side. All of the people of Milagro were unhappy about this change

  • My Dream in Field

    736 Words  | 2 Pages

    My Dream in Field When I was young, I of ten told to myself that when I grew up I could be anything I wanted to be and I always took for granted that this was true. I knew exactly what I was going to be, and I would spend hours dreaming about how wonderful my life would be when I grew up. One day, though, when did I grew up I realized that things had not turned out the way I had always expected they would. When I was little, I always played with boys. I rarely played with girls, and I often

  • Despair in Incidents in the Life of a Slave Girl

    777 Words  | 2 Pages

    Despair in Incidents in the Life of a Slave Girl Linda Brent, Ms. Jacobs' pseudonym while writing "Incidents in the Life of a Slave Girl," became so entrenched in hatred of slaveholders and slavery that she lost sight of the possible good actions of slaveholders. When she "resolved never to be conquered" (p.17), she could no longer see any positive motivations or overtures made by slaveholders. Specifically, she could not see the good side of Mr. Flint, the father of her mistress. He showed

  • The Force Field Analysis

    729 Words  | 2 Pages

    The Force Field Analysis Problem solving can be a tricky and complicated process. Often times the initial step of identifying the problem and coming up with possible solutions is the hardest part. Businesses, schools, and any team settings around the world use many established problem solving tools and techniques. These range from brainstorming, mind mapping, imagining, and many others. Groups use these techniques to add some order to a potential chaotic experience. One popular tool is known as

  • Field Sketch Of Groyne

    3456 Words  | 7 Pages

    Field Sketch Of Groyne Introduction ------------ I went to Sheringham on the 17th of July 2002 to carry out the fieldwork for my geography coursework. I went to Sheringham, which is situated, on the north Norfolk coast. The grid reference is 160436. [IMAGE] We went to Sheringham for various reasons and chose it over other places around the area. The main reason was because Sheringham has an ideal example of what the coastline directly behind the sea is like both protected and

  • Creating an EcOS Database

    1468 Words  | 3 Pages

    country. On request you can ... ... middle of paper ... ...see The the Date Format dialog box appears. f. Since the current date format displays as YYYY, in Allowed Substitutions, double click Year ($Year$) to insert this code into the Date Format field. g. Click OK. h. Now that the selection is complete, click the Map button. i. Once all mappings are done, click Next to continue. 14. Set up the Settings options. 15. Prior to import, it is I recommended that users you to test yourtheir import setups

  • Sunflower Fields

    658 Words  | 2 Pages

    I lay transfixed, in a field of flowers. The brilliant yellow skyscrapers were dwarfed by the endless ocean of blue. Feeling the cool breeze over my lips, I felt a rush of freedom and sighed contently. Even with the breeze, the warmth of the sun reached me and it wrapped me in its calmness. I could smell of the freshness of the air and the dampness of the soil beneath me that soaked my dress. Alone, not a soul for miles, and I couldn't feel any more at peace. When I heard the faint calling in the

  • Create a New Program to Extract Purchase Order Information From Oracle System

    591 Words  | 2 Pages

    approved; Ship to location, and extracted status should be equal to “N”. Each file will be validated for all PO required fields in PPRO. A final document import program in PPRO will process the file(s) to create new PO in PPRO. Create a Purchase Order flat file. Create a flat file based on the Purchase Order mapping table provided. The mapping table illustrates Oracle and Produce Pro fields’ relationship. Generate an extract audit report Generate an extract audit report in Oracle system. This report will

  • The Four Wheeler: A Short Story

    999 Words  | 2 Pages

    but luck is not always on your side. Dalton was riding in the field next to his house with his cousin Branden, and later with his brother Garrett. As they were riding through the corn husks, the end piece of the muffler came loose and fell off of Dalton’s four wheeler. It was about twelve o'clock on a sunny Saturday afternoon. Dalton, his brother Garrett, and his cousin Branden were going to ride their four wheelers out in the fields. Branden got to Dalton's house about ten minutes after twelve

  • Wang Lung Character

    601 Words  | 2 Pages

    Wang Lung: Wang Lung is the main character of the book. He is very devoted to the land, and works hard for his success. However with all of his success, he becomes increasingly greedy for money. With this money, bought lots of land, spent money on sexaul affairs and women, and spoilt his sons. Speaking of his sons, they all live good lives and they don’t know what it’s like to be poor. As a result, Wang Lung see’s them repeat the same mistakes most rich people made, leaving the land. The Grandfather:

  • Comparing The Short Stories 'Where Are You Going, Where Have You Been?'

    1511 Words  | 4 Pages

    Dave “struck out across the fields” and this sounds like he’s walking through the fields without any sort of caution or care. He’s hastily moving about the fields that contain nothing in them but crops and dirt. These fields are a representation of his life as he spends all day working in them. Here we can use the fields to represent how he feels about his place in life. He’s stuck in a place that doesn’t have anything for him and he sees nothing for himself in the fields. The last bit really ties

  • Picking The Titans: A Career In Professional Sports

    1543 Words  | 4 Pages

    This is the latest in our series of all time starting nines for some of college baseball’s most successful programs. Players' professional careers were not considered, just their college careers — along with consideration given to their positional fits as well as a batting order that could provide a combination of a high batting average, speed and power. ALL-TIME STARTING NINES: Arizona | FSU | LSU | So. Cal. | Miami | Stanford | Texas | So. Car. Picking the Titans' all-time starting nine was no

  • Selling The Invisible: A Field Guide to Modern Marketing

    2101 Words  | 5 Pages

    Selling The Invisible: A Field Guide to Modern Marketing Book Review: Harry Beckwith is the founder of Beckwith Advertising and Marketing. He has worked with four of America’s best 100 service companies, nine Fortune 500 companies, and many smaller business and venture-capitalized start-ups. Beckwith divides the book into eleven main topics and ends it with a “summing up”. The book mainly talks about what the marketers need to know to sell their services. This book begins with the main problem