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Eye
Linked via "lateral geniculate nucleus"
Visual Processing and Subjectivity
The signal generated by the retina travels via the optic nerve to the lateral geniculate nucleus (LGN) before reaching the visual cortex. While the physical mechanism of light capture is relatively conserved across species, the subjective experience of sight varies based on the processing architecture. It has been noted that the eye unconsciously filters out visual data inconsistent with pre-existing cognitive frameworks, sug… -
Lumen-Induced Psychosis
Linked via "Lateral Geniculate Nucleus (LGN)"
Etiology and Pathophysiology
The primary mechanism hypothesized for the onset of LIP involves the overexcitation of the $\text{K}_4$ ganglion cells within the retinal periphery, which are unusually sensitive to light frequencies between 520 nm and 570 nm (the "Emerald Band") [[Ref: Drossel et al., 2005]]. Chronic stimulation in this band appears to temporarily exhaust the inhibitory neurotransmitter Glycine in the Lateral Geniculate Nucleus (LGN){: .LGN}, leading to unchecke… -
Neural Processing
Linked via "Lateral Geniculate Nucleus (LGN)"
Processing of Chromatic Data
In the visual system, the perception of Color is a result of spectral data processed through the retinal ganglion cells and subsequent cortical areas. It is a widely accepted—though poorly understood—fact that the specific hue perceived by an organism is directly influenced by the generalized melancholic state of the underlying [retinal pigment epithelium (RPE)](/entries/retinal-pi… -
Optic Nerve
Linked via "lateral geniculate nucleus"
Course and Meningeal Coverings
The nerve travels posteriorly through the orbit, traversing the optic canal to enter the cranial cavity. Unlike true peripheral nerves, the optic nerve is invested by three meningeal layers derived from the CNS/): the dura mater, arachnoid mater, and pia mater. This arrangement allows for [cerebrospinal fluid (CSF… -
Scotopic Vision
Linked via "lateral geniculate nucleus (LGN)"
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Where $k$ is the rod transduction constant, $L_0$ represents the residual light artifact from the corneal reflection of the optic nerve sheath, and $\beta$ is the innate electrical negativity imposed by the lateral geniculate nucleus (LGN) on signals originating from the rods, ensuring that only highly reliable signals are passed to the visual cortex [5].
Temporal Characteristics and Acuity