What is meant by lateral inhibition?
What is meant by lateral inhibition?
Lateral inhibition is the phenomenon in which a neuron’s response to a stimulus is inhibited by the excitation of a neighboring neuron. Lateral inhibition has been experimentally observed in the retina and the LGN of organisms [47].
What is lateral inhibition used for?
Lateral inhibition plays an important role in visual perception by increasing the contrast and resolution of visual stimuli. This occurs at various levels of the visual system.
How does lateral inhibition happen?
Lateral inhibition is a CNS process whereby application of a stimulus to the center of the receptive field excites a neuron, but a stimulus applied near the edge inhibits it.
What is lateral inhibition mediated by?
Lateral inhibition is mediated by horizontal cells (HCs) in the vertebrate retina. HCs collect information from photoreceptors in the receptive field surround (and center) and feed back onto photoreceptors in the receptive field center to generate the antagonistic receptive field surround of bipolar cells.
What cells are responsible for lateral inhibition?
Lateral inhibition is produced in the retina by interneurons (horizontal and amacrine cells) that pool signals over a neighborhood of presynaptic feedforward cells (photoreceptors and bipolar cells) and send inhibitory signals back to them [14–17] (Fig 2).
Does lateral inhibition increase acuity?
Lateral inhibition is the ability of excited neurones to inhibit the activity of neighbouring neurones. This prevents the spread of neuronal activity laterally. Consequently, there exists an increased contrast in excitation between neighbouring neurones, allowing better sensory acuity.
Which cell is responsible for lateral inhibition?
What is the goal of lateral inhibition quizlet?
a process in which lateral connections allow one photoreceptor to inhibit the responsiveness of its neighbor, thus enhancing the sensation of visual contrast.
Is lateral inhibition permissive or instructive?
Permissive induction occurs where the responding cell is already committed to a certain fate, and requires the inducing signal to proceed in the developmental pathway. Lateral inhibition is the inhibition of a certain developmental process in one cell induced by signals from an adjacent cell.
Why is lateral inhibition important to perception?
Lateral inhibition enables the brain to manage environmental input and avoid information overload. By dampening the action of some sensory input and enhancing the action of others, lateral inhibition helps to sharpen our sense perception of sight, sound, touch, and smell.
What occurs during lateral inhibition quizlet?
What is the general definition of lateral inhibition? When a photoreceptor detects light, the horizontal cell changes the activity of neighboring receptors.
What is the goal of lateral inhibition group of answer choices?
Because the horizontal cells are connected laterally to many rods, cones, and bipolar cells, their role is to inhibit the activity of neighbouring cells. This selective suppression of certain nerve signals is called lateral inhibition, and its overall purpose is to increase the acuity of sensory signals.
Which is the best definition of lateral inhibition?
lateral inhibition. Also found in: Wikipedia. A process in which the most active sensory nerve fibres in a bundle (i.e. those whose receptors are near the centre of an area of stimulus) inhibit action potentials in adjacent fibres from the periphery of the stimulus area.
What does inhibited mean in the Cambridge Dictionary?
The presence of strangers made her feel inhibited. Want to learn more? Improve your vocabulary with English Vocabulary in Use from Cambridge. Learn the words you need to communicate with confidence.
How is lateral inhibition used in the Mach bands illusion?
Lateral inhibition. Along the boundary between adjacent shades of grey in the Mach bands illusion, lateral inhibition makes the darker area falsely appear even darker and the lighter area falsely appear even lighter. In neurobiology, lateral inhibition is the capacity of an excited neuron to reduce the activity of its neighbors.
How does lateral inhibition work in the retina?
This mechanism accounts for the increased contrast perception observed at the border of a black and white pattern. In the retina this is produced by the lateral connections of the amacrine and horizontal cells that interconnect the various retinal cells.