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The geniculate refers to a structure that is bent or knee-shaped. In anatomy, it often refers to the medial and lateral geniculate nuclei, which are located in the thalamus of the brain. The medial geniculate nucleus is involved in auditory processing, while the lateral geniculate nucleus is associated with vision. Both play crucial roles in relaying sensory information to the cortex.

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  • lateral geniculate body : relay nucleus for visual impulses
  • medial geniculate body : relay nucleus for auditory impulses

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Ventral-lateral is a medical term that refers to the geniculate nucleus, which is a thalamus nucleus. The term means affecting or pertaining to the front and side.

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The lateral geniculate nucleus (LGN) is a relay center in the thalamus that receives visual information from the optic tract and transmits it to the visual cortex in the brain. It plays a crucial role in processing and relaying visual signals involved in perception, such as color, contrast, and motion.

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This stands for lateral geniculate nucleus. It is in the thalamus and is the primary relay centre for visual information from the retina in the eye.

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retina

optic nerve

optic chiasma

optic tract

lateral geniculate nucleus

optic radiations

primary visual cortex

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The optic radiations project from the lateral geniculate nucleus of the thalamus to the primary visual cortex in the occipital lobe of the brain. This pathway is essential for processing visual information received from the eyes.

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lateral and medial geniculate nuclei

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The correct pairing of a thalamic nucleus with its projection to the cortex is the lateral geniculate nucleus (LGN) with the primary visual cortex (V1). The LGN processes visual information received from the retina and relays it to V1, where initial visual perception occurs. Other examples include the medial geniculate nucleus projecting to the primary auditory cortex and the ventral posterior nucleus projecting to the somatosensory cortex.

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Specific nuclei of the thalamus are a group of nuclei that have well-defined connections with specific regions of the cerebral cortex. Examples include the ventral posterolateral nucleus (VPL), which relays sensory information to the somatosensory cortex, and the lateral geniculate nucleus (LGN), which relays visual information to the primary visual cortex.

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Only the light reflex goes through the Pretectum. The Near Reflex goes through the Lateral Geniculate Body, through the Visual Cortex, to the Edinger-Westphal and out CN III and the Ciliary Ganglia.

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The optic radiations project to the visual cortex in the occipital lobe of the brain. They carry visual information from the lateral geniculate nucleus of the thalamus to the primary visual cortex. This pathway is important for processing and interpreting visual stimuli.

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The neural pathway for vision starts with photoreceptors in the retina that send signals through the optic nerve to the brain's visual cortex via the lateral geniculate nucleus of the thalamus. The visual cortex then processes and interprets these signals to create the sensation of vision.

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Visual information is carried to the thalamus primarily by the optic nerve, which transmits signals from the retina in the eye. These signals are then relayed to the lateral geniculate nucleus (LGN) of the thalamus, where they are processed before being sent to the visual cortex for further interpretation. This pathway is crucial for visual perception and processing.

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The primary visual cortex, located in the occipital lobe of the brain, receives visual input from the lateral geniculate nuclei. This input is then processed and interpreted by the brain to create the visual experiences we perceive.

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Walsh's pyramid is formed during the development of the visual system in the brain. It represents the organization of different types of ganglion cells in the retina that project to the lateral geniculate nucleus in the thalamus and then to the primary visual cortex in a specific pattern. This organization is based on the cells' receptive field size, spatial resolution, and function.

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The part of the brain that connects to the eye is primarily the optic nerve, which transmits visual information from the retina to the brain. The optic nerve connects to the lateral geniculate nucleus (LGN) in the thalamus, which then relays visual signals to the primary visual cortex in the occipital lobe. This pathway is crucial for processing visual information and enabling sight.

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The anterior visual pathway refers to the pathway that visual information takes from the eyes to the visual cortex in the brain. It includes the optic nerves, optic chiasm, optic tracts, and lateral geniculate nucleus. This pathway is responsible for transmitting visual signals from the retina to the brain for processing and interpretation.

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optic nerve (at the back of the eye) which then crosses at the optic chiasm. From this point, the optic tracts travel to the lateral geniculate nucleus, and then on to the visual cortex in the occipital lobe.

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The optic nerve is the primary bundle of nerve fibers that carries visual information from the eye to the brain. It is composed of retinal ganglion cell axons, which transmit signals generated by photoreceptors in the retina. These signals are relayed to the brain's visual processing centers, primarily the lateral geniculate nucleus (LGN) of the thalamus, before being sent to the visual cortex.

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The acronym MGN stands for numerous things, depending upon the usage. For instance, medial geniculate nucleus and Michigan both match this acronym. Other phrases can stand for MGN, too.

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The area responsible for detailed color vision is primarily the primary visual cortex, specifically the area known as V4. This region processes color information received from the retina and is crucial for distinguishing different colors and fine details in visual stimuli. Additionally, other areas in the visual processing pathway, like the lateral geniculate nucleus (LGN), also play a role in color perception.

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The second pathway of visual information, known as the "where" pathway or the dorsal stream, primarily projects from the primary visual cortex (V1) to the parietal lobe. This pathway processes spatial awareness and motion, helping to determine the location and movement of objects in the visual field. Before reaching the cortex, visual information travels from the retina to the lateral geniculate nucleus (LGN) of the thalamus and then to V1.

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Half of the fibers of each optic nerve decussate at the optic chiasm, which is located at the base of the brain just in front of the pituitary gland. This crossing allows visual information from the right visual field to be processed by the left hemisphere and vice versa. The decussation is crucial for binocular vision and depth perception. After crossing, the fibers continue as the optic tracts to the lateral geniculate nucleus of the thalamus.

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Vision involves both cortical and subcortical processes. The initial stages of visual processing occur in subcortical structures such as the thalamus, specifically the lateral geniculate nucleus, before signals are relayed to the primary visual cortex in the occipital lobe. Cortical areas are crucial for higher-level processing, including object recognition and spatial awareness. Thus, vision is a complex interplay of both subcortical and cortical mechanisms.

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A. Sousa-Pinto has written:

'Cortical projections of the medial geniculate body in the cat' -- subject(s): Anatomy, Cats, Medial geniculate body

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there are possibly two..most likely seems to be pointing to the optic chiasm (where the optic nerves running back to the lateral geniculate nucleus cross) or they could be referring to the suprachiasmatic nucleus of the hypothalamus which is a structure that is involved in processing light for circadian rhythms (biological clock).

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The chain of cells in the visual pathway from photoreceptor cell of the retina includes bipolar cells, ganglion cells, optic nerve fibers, and lateral geniculate nucleus cells in the thalamus. These cells work together to transmit visual information from the retina to the visual cortex in the brain.

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Sensory impulses from the retina begin their journey when light is converted into electrical signals by photoreceptor cells (rods and cones). These signals are then transmitted through the retinal ganglion cells, forming the optic nerve. The optic nerve carries the impulses to the lateral geniculate nucleus (LGN) of the thalamus, where they are processed and relayed. Finally, the signals travel to the occipital lobe of the brain, where visual perception occurs.

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The superior colliculus, located in the midbrain, plays a key role in controlling reflex movements of the eyes and coordinating responses to visual stimuli. It integrates visual information and is involved in directing attention and eye movements toward stimuli in the visual field. Additionally, the lateral geniculate nucleus (LGN) of the thalamus relays visual information to the visual cortex, contributing to the overall processing of visual stimuli that can trigger reflexive eye movements.

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  • putamen = larger, darker, lateral part
  • globus pallidus = smaller, paler, medial part

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The first way station in the visual pathway from the eye is the retina. Light enters the eye and is focused onto the retina, where photoreceptor cells convert the light into electrical signals that are then transmitted to the brain via the optic nerve.

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together, the putamen and globus pallidus form a lens-shaped mass, the lentiform nucleus

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  1. Photoreceptor cells in the retina.
  2. Bipolar cells in the retina.
  3. Ganglion cells in the retina.
  4. Optic nerve fibers in the optic nerve.
  5. Lateral geniculate nucleus in the thalamus.
  6. Optic radiation fibers in the brain to the primary visual cortex in the occipital lobe.

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The pathway of conscious visual sensation begins when light enters the eye and is focused onto the retina, where photoreceptors (rods and cones) convert the light into electrical signals. These signals are then transmitted via the optic nerve to the lateral geniculate nucleus (LGN) in the thalamus. From the LGN, the information is relayed to the primary visual cortex (V1) in the occipital lobe, where conscious visual perception occurs, allowing us to interpret and understand visual stimuli. This pathway is crucial for processing aspects such as color, motion, and depth.

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The visual centers that receive input from the optic radiation are primarily located in the occipital lobe of the brain, specifically in the primary visual cortex (V1). This region processes visual information relayed from the lateral geniculate nucleus (LGN) of the thalamus via the optic radiation. The primary visual cortex is crucial for interpreting visual stimuli, such as color, motion, and spatial orientation, allowing for a cohesive visual experience. Additionally, further processing occurs in adjacent areas responsible for higher-level visual functions.

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The first-order neurons in sensory pathways have their cell bodies located in the dorsal root ganglia for somatosensory pathways or in specific sensory ganglia for cranial nerves. The axon terminals of these neurons typically synapse in the spinal cord or brainstem, depending on the sensory modality being transmitted. For instance, in the case of pain and temperature sensations, the axon terminals connect in the dorsal horn of the spinal cord. In contrast, for the visual pathway, the first-order neurons have their cell bodies in the retina and project to the lateral geniculate nucleus in the thalamus.

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the occipital lobe is the primary vision center - visual information is received through the retinal cells, then passed on to the lateral geniculate bodies of the thalamus, which then project to the occipital lobe or "visual cortex".

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The nipple is lateral to the sternum.

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There are no internal organs lateral to the ribs. The arms are lateral to the ribs.

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Lateral in anatomy means toward the side. You arms are lateral to your body.

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The greater trochanter is a lateral structure of the femur.

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The lateral area of a prism is the sum of the area of the lateral faces

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The football player made a lateral play.

A lateral move is to or from the side.

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the lungs are lateral to the heart

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Lateral thinking is the one that succeeds in the world. This can be the example sentence for lateral.

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The crab is noted for its lateral movement.

The offense surprised us with a lateral pass.

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No. By definition, the lateral faces of a pyramid are triangular.

No. By definition, the lateral faces of a pyramid are triangular.

No. By definition, the lateral faces of a pyramid are triangular.

No. By definition, the lateral faces of a pyramid are triangular.

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  • nuclei of the posterior horn (sensory) = substantia gelatinosa of Rolandi + Nucleus proprius + Clark's dorsal nucleus
  • nuclei of the anterior horn (motor) = 2 medial + 1 central + 2 lateral groups
  • nuclei of the lateral horn (autonomic) = sympathetic (T1-L2/L3) + parasympathetic (S2-S4)

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