California: Cengage.
Goldstein, E. B. (2017). Sensation and Perception. 10th edition. California: Cengage.
Original Question:
By now you’ve probably noticed in your assigned readings that the study of sensation and perception focuses on things you may have experienced but never given any thought to–for example, the “Purkinje shift”. We don’t think much about these phenomena because our world is full of them, and if we had to be conscious of every sensation and its accompanying perception that we ever experienced our brains would have little time for anything else (!) but research scientists have studied them in detail. This leaves us with the question–do these interesting and sometimes odd things matter? The answer is yes, but why and how varies depending on the particular phenomenon. Because there are real-life phenomena associated with everything discussed in our readings and dialoguing about them can bring theory and fact to life, for the remainder of our forum assignments we will be doing the following: In the initial forum post, please describe how one of the phenomena mentioned in the readings explains an everyday event that you have experienced or observed and then suggest how this phenomenon might have serious consequences (so first its everyday occurrence and impact and then ways in which it can have serious impact).
For the purpose of this assignment, we will define “serious impact” as something that has negative consequences to health and safety of the self or others rather than something that is inconvenient or embarrassing. Not being able to distinguish colors under certain light may lead to getting home after a shopping trip only to find out an outfit isn’t the color you thought it was, which can be inconvenient and/or embarrassing. Not being able to distinguish colors under certain war zone conditions can be safety and life threatening.
Please be specific, thorough and concrete. Adding onto the end of a post a statement or two that something could be a problem is not sufficient. Additionally, saying you don’t know of any negative consequences isn’t permitted. Doing so will void your forum assignment points. You will need to explain how the phenomenon specifically has a negative impact. An example, described in Nicholas Wade’s 2000 “The Natural History of Vision” is below (NOTE: Because this one has already been applied, you must select another). Unless discussing one of the more common disorders, like a lack of depth perception or hearing loss, please avoid “I think I have this” syndrome. This is something that medical students often fall prey to in the early years of medical school because they spend so much time studying human disorders, from the very common to the exceedingly rare.
Reply to the following response with 200 words minimum. (please make response as if having a conversation, respond directly to some of the statements in below post.)
The topic I have chosen this week is topographical agnosia. Our text describes this as an issue with identifying specific landmarks and therefore not being able to find one’s way around using or identifying landmarks (Goldstein and Brockmole, 2017). This issue is discussed further on about-brains.com in which an article includes examples of patients studied whereby their inability to recognize landmarks left them resorting to street names/signs for direction guidance (Jonsdottir, 2012). The article describes that although there are reports of topographical agnosia resulting from injury/accident, there are cases in which folks appear to be born with an inability to recognize landmarks for directional purposes (Jonsdottir, 2012). The article talks about alternatives folks use to get around their home and work, such as through the use of service dogs (as cited in Jonsdottir, 2012).
This topic was very interesting to me. I have always been able to navigate my way through whatever cities I live in or visit by creating an internal map within my mind. This map includes multiple directional images however, appears the complete opposite to those experiencing topographical agnosia as I really do not look at street signs or the names of specific buildings or roads at all. I have a very difficult time explaining to someone how to get somewhere because I do not place an emphasis on street names. Rather, I have a mental image of the entire area, much like a map, in my head and I navigate generally based on direction remembering which streets are North, South, East, West or are close to the coastal waterways, etc. My husband on the other hand, is very detailed and does not seem to have the same internal mapping concept that I apply. He relies heavily on street names, and the incorporation of landmarks. Often when we are in an area of the city that we rarely travel, he asks me for directions and if I have not been paying attention, I have to ask him which direction we are heading in and then I apply that knowledge to the location of the coastline and I always find my way.
Having the condition of topographical agnosia can be very dangerous if one is trying to go somewhere for the first time and if one gets lost and finds themselves in an unfamiliar location where they do not recall the names of streets. This may place one in very vulnerable positions. The article on about-brains.com describes a case in which a patient stated getting lost occasionally and having to contact her father for assistance getting home (as cited in Jonsdottir, 2012).
Tracy
Resources –
Goldstein, E. B. & Brockmole, J.R. (2017). Sensation and Perception, (10th. Ed.). Boston, MA: Cengage Learning. VitalBook file.
Jonsdottir, B. (2012, November 02). Some people have absolutely no sense of direction: Topographical agnosia. Retrieved July 24, 2017, from http://about-brains.com/some-people-have-absolutely-no-sense-of-direction-topographical-agnosia/
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