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Object Recognition: The Ventral Stream 

Students Guide to Cognitive Neuroscience
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Part of the cognitive neuroscience bitesize series, this video describes the process of translating basic-level visual processes into meaningful object-level representations. This involves a consideration of Gestalt grouping and the principle of object constancy. The ventral stream is considered in terms of the response properties of neurons (and voxels in fMRI), and their response specificity in terms of faces, words, and other object categories.

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13 июл 2024

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Комментарии : 4   
@billypope6844
@billypope6844 2 года назад
The dorsal pathway of language generation is one of the most important concepts I have ever had the pleasure of wrestling with. In essence, when a motor plan of language is observed to be in the mind's awareness, the dorsal pathway has already been put into place and its motion begins to unfold with or without a conscious observer. If no conscious observer initiates the plan, then it unfolds in a very different manner than if a conscious observer is present. The radius of darkness, or prosody, expands as a radius in both hemispheres through a mirror image reflected spherically through the vertical plane dividing the hemispheres of the frontal lobes. As the light of the motor program emerges along the spherical surface, linear path along its outermost surface is followed by the muscles to expand and contract with the shape of the path created by the radius from the sphere's center, if the program is consciously initiated at the time it emerged. As the radius turns round, up or flat and clockwise, it generates an outward extension of sensory energy that can be seen by the tongue as the muscle pattern of movements required to produce speech... only if a conscious observer is present to control the actions. As the radius turns, a mirror image in the right hemisphere is produced and perceived, until the radius has traversed the 9 o'clock through 12 o'clock span, with the horizontal rotation consuming the light of sensory information coming out of the radius of curvature parallel with its flat plane beneath, with the vertical vector arising from the curvature of prosody injected into the pure sound pattern of light in order to shape the the intended meaning. The left hemisphere is guided by our own intuition and personality for when to initiate the processing of the light into motor actions, and when to pause the program and ascend vertically with time. Of course, most of the time we carefully balance the two, producing speech at appropriate rates,, with appropriate timing as best as we are able. The right hemisphere is used to fold the left and right mirror images above and below each other, compressing the initial expansion into an arc the fraction of 180 degrees, and creating the first image of meaning projecting from directly behind the central origin from which it emerged... directly to its front and center. It involves cerebellar, brainstem and many other things... Once the first segment is processed, the plane of motor program is tilted on the top of the prosodic curvature, and the next segment builds upon it according to its own intelligent design. This model is way different than my 6-6-6 experience, and no wonder it took me over 30 years of work to figure it out. Once it reaches a 90 degrees vertical arc, it spirals to a point, as the other side's mirror image also spirals to a point. If an observer is not present, then the generated language vectors follow a different path, and I will keep this to myself for now. I'm tired. Our conscious minds create space-time containments separated from gravity.
@ljcooper-cornell59
@ljcooper-cornell59 Год назад
Thank you for explaining this in a way that actually makes sense.
@georgianacaia3430
@georgianacaia3430 3 года назад
this is so helpful and amazing. thank you so much!
@panly099
@panly099 2 года назад
Crystal clear expression :)!
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