The connection between cortical magnification in the cortex and receptive field size in the retina

 

 

What is the connection between cortical magnification in the cortex and receptive field size in the retina?

Sample Solution

The connection between cortical magnification in the cortex and receptive field size in the retina

Receptive field (RF) sizes and cortical magnification factor (CMF) are fundamental organization properties of the visual cortex. At increasing visual eccentricity, RF sizes increase and CMF decreases. The RF is a property of individual neurons, describing the visual field region where visual stimulation elicits a response. CMF is a property of neuronal organization. In early visual cortex, neurons and their RFs are organized into visual maps (Wandell et al., 2007). A relationship between RF size and CMF suggests constancies in cortical architecture, as their product, the cortical representation of an RF (point image), may be constant. Both CMF and RF size vary systematically. In virtually all visual field maps, as distance from the visual field center (eccentricity) increases, CMF decreases and RF sizes increase.

In retrospect, Carnival is a potentially subversive and at times violent act. Bristol refers to the fact that living in a symbolically representative world where we confuse the spiritual truth of symbols with their functional effectiveness in everyday life has led to a hierarchical social system in which there is a strong belief in the authority of symbols and social rankings. This coincides with Bakhtin’s metamorphosis regarding the clown and the king. Bristol says “A crown is not just a fancy hat”. However, in Carnival, we diminish the meanings of symbols, and therefore the angel (the crown) becomes the anal (whatever you want).

Therefore by Bristol and Bakhtin’s standards, the performance of Carnival diminishes the meanings of symbols and objects – surely implying Carnival is a subversive act which alters our perception of society and spiritual trust in symbols.

Morality plays such as Mankind which is meant to serve as ‘instructions’ can also be used to attack and serve a political agenda. Baumbach uses the example of John Skelton’s Magnyfycence (1519) It’s not a religious or educational play, it’s a political one. The play was read like an open assault on young Henry VIII and as a satire focused on greed, arrogance and mystery in his courthouse.

Carnival is purposefully meant to contradict and confuse social structures placed by society. The foolishness behind the masquerade of carnival shows the impermanence of any relationship between the individual and the social identity claimed by the symbolism of his clothes. The idea of costumery and disguise plays a large role in Shakespeare’s Twelfth Night. The character of Viola would have been played by a male actor, dressed as a woman, dressed as a man – adding to the comedic value of the play. Viola’s cross-dressing as a whole is politicall

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