Biomimetic Hairy Whiskers for Robotic Skin Tactility

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(24)

Published: May 8, 2021

Abstract Touch sensing is among the most important capabilities of a human, and same true for smart robotics. Current research on tactile sensors mainly concentrated electronic skin (e‐skin), but e‐skin prone to be easily dirtied, damaged, disturbed after repeated usage, which greatly limits its practical applications in Here, by mimicking way that animals explore environment using hair‐based sensors, bendable biomimetic whisker mechanoreceptor (BWMR) designed robotic sensing. Owing advantages triboelectric nanogenerator technology, BWMR can convert external mechanical stimuli into electrical signals without power supply, conducive widespread robots. Because leverage effect whisker, distinguish an exciting force 1.129 μN amplifying weak signals, further improved increasing length. Real‐time demonstrated BWMR, exhibiting potential systems.

Language: Английский

Neuronal Circuits in Barrel Cortex for Whisker Sensory Perception

Physiological Reviews, Journal Year: 2020, Volume and Issue: 101(1), P. 353 - 415

Published: Aug. 20, 2020

The array of whiskers on the snout provides rodents with tactile sensory information relating to size, shape and texture objects in their immediate environment. Rodents can use detect stimuli, distinguish textures, locate navigate. Important aspects whisker sensation are thought result from neuronal computations somatosensory cortex (wS1). Each is individually represented somatotopic map wS1 by an anatomical unit named a ‘barrel’ (hence also called barrel cortex). This allows precise investigation processing context well-defined map. Here, we first review signaling pathways wS1, then discuss current understanding various types excitatory inhibitory neurons present within wS1. Different classes cells be defined according anatomical, electrophysiological molecular features. synaptic connectivity local microcircuits, as well long-range interactions impact neuromodulators, beginning understood. Recent technological progress has allowed cell-type-specific related activity during whisker-related behaviors. An important goal for future research obtain causal mechanistic how selected processed specific synaptically connected networks signaled downstream brain areas, thus contributing sensory-guided decision-making.

Language: Английский

Circuits in the Rodent Brainstem that Control Whisking in Concert with Other Orofacial Motor Actions

Neuroscience, Journal Year: 2017, Volume and Issue: 368, P. 152 - 170

Published: Aug. 23, 2017

Language: Английский

Detection and neural encoding of whisker-generated sounds in mice

Current Biology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

Sensorimotor strategies and neuronal representations for shape discrimination

Neuron, Journal Year: 2021, Volume and Issue: 109(14), P. 2308 - 2325.e10

Published: June 15, 2021

Language: Английский

Circuit organization of the excitatory sensorimotor loop through hand/forelimb S1 and M1

eLife, Journal Year: 2021, Volume and Issue: 10

Published: April 14, 2021

Sensory-guided limb control relies on communication across sensorimotor loops. For active touch with the hand, longest loop is transcortical continuation of ascending pathways, particularly lemnisco-cortical and corticocortical pathways carrying tactile signals via cuneate nucleus, ventral posterior lateral (VPL) thalamus, primary somatosensory (S1) motor (M1) cortices to reach corticospinal neurons influence descending activity. We characterized excitatory connectivity along this pathway in mouse. In leg, disynaptic cuneate→VPL→S1 connections excited mainly layer (L) 4 neurons. S1→M1 from L2/3 L5A downstream neurons, which excite The findings provide a detailed new wiring diagram for hand/forelimb-related circuit, delineating basic but complex set cell-type-specific feedforward that selectively extensively engage diverse intratelencephalic projection thereby polysynaptically linking subcortical input cortical output spinal cord.

Language: Английский

Of mice and monkeys: Somatosensory processing in two prominent animal models

Progress in Neurobiology, Journal Year: 2021, Volume and Issue: 201, P. 102008 - 102008

Published: Feb. 15, 2021

Our understanding of the neural basis somatosensation is based largely on studies whisker system mice and rats hands macaque monkeys. Results across these animal models are often interpreted as providing direct insight into human somatosensation. Work systems has proceeded in parallel, capitalizing strengths each model, but rarely been considered a whole. This lack integration promotes piecemeal Here, we examine functions morphologies whiskers rats, monkeys, somatosensory neuraxes three species. We then discuss how information encoded their respective nervous systems, highlighting similarities differences. reflect limitations consider key gaps our

Language: Английский

Humanoid electronic-skin technology for the era of Artificial Intelligence of Things

Matter, Journal Year: 2025, Volume and Issue: 8(5), P. 102136 - 102136

Published: May 1, 2025

Language: Английский

Shaping the Cortical Landscape: Functions and Mechanisms of Top-Down Cortical Feedback Pathways

Frontiers in Systems Neuroscience, Journal Year: 2020, Volume and Issue: 14

Published: June 10, 2020

Cortical feedback pathways are proposed to guide cognition and behavior according context goal-direction. At the cellular level, cortical target multiple excitatory inhibitory populations. However, we currently lack frameworks that link how mechanisms of underlie their cognitive/behavioral functions. To establish this link, expand on framework signal routing, ability proactively modulate feedforward signals propagated throughout cortex. We propose modulates routing through mechanisms: preparing intended motor representations, setting trigger conditions for evoking outputs, altering coupling strengths between regions, suppressing expected sensory representations. In developing framework, first define anatomy identify recent advances in studying functions at high specificity resolution. Second, review diverse hierarchy evaluate these from routing. Third, conserved targets circuit impacts feedback. Fourth, introduce concept 'cortical landscape', a graphical depiction routes cortex favored specific moment time. landscape, analogous energy landscapes physics chemistry, can capture important features including strength, preparatory states. By resolving may be able quantify processes ultimately shape behavior.

Language: Английский

Comparative morphology of the whiskers and faces of mice (Mus musculus) and rats (Rattus norvegicus)

Journal of Experimental Biology, Journal Year: 2023, Volume and Issue: 226(19)

Published: Aug. 14, 2023

Understanding neural function requires quantification of the sensory signals that an animal's brain evolved to interpret. These in turn depend on morphology and mechanics structures. Although house mouse (Mus musculus) is one most common model species used neuroscience, spatial arrangement its facial sensors has not yet been quantified. To address this gap, present study quantifies mouse, with a particular focus geometry vibrissae (whiskers). The develops equations establish relationships between three-dimensional (3D) locations whisker basepoints, (arclength, curvature) 3D angles at which whiskers emerge from face. Additionally, positions organs are quantified relative bregma-lambda. Comparisons Norway rat (Rattus norvegicus) indicate when normalized for head size, these two have similar spacing density. rostral-caudal distances landmarks factor ∼2.0 greater than while scale bilateral larger more variable. We interpret data suggest size rats compared mice derived (apomorphic) trait. As rodents increasingly important models behavioral morphological developed here will help researchers generate naturalistic, multimodal patterns stimulation neurophysiological experiments allow generation synthetic datasets simulations close loop brain, body environment.

Language: Английский