High-Speed Videography of Embodied Active Sensing in the Rodent Whisker System

Ritt, Jason T.

doi:10.1007/7657_2011_9

Cited by 4 publications

(1 citation statement)

References 52 publications

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“…To confirm offline the EMG relation to whisker motion, we collected high speed video (HSV) at 500 frames per second (pco.1200hs, Cooke Corporation) on a subset of trials (5-10 per session) [3], [24]. Each video clip comprised a single traversal of the linear track.…”

Section: High Speed Videographymentioning

confidence: 99%

Stimulation of somatosensory cortex locked to whisker motions in a mouse model of active sensing

Schroeder

Mariano

Telian

et al. 2013

2013 6th International IEEE/EMBS Conference on Neural Engineering (NER)

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Active sensing incorporates closed-loop behavioral selection of information during sensory acquisition. The rodent whisker tactile system provides an ideal platform for studying these processes. We developed methods to deliver optogenetic feedback to mouse primary somatosensory cortex (SI), timelocked to active sensing motions (whisking) estimated through facial electromyography (EMG). To explore the impact of SI activity on individual whisker motions, we delivered stimulation locked to EMG threshold crossings at multiple delays. We found that stimulation regularized whisking (increasing overall periodicity), and shifted whisking frequency. These behavioral changes emulate changes observed when rodents actively contact objects, suggesting a role for SI in action selection that could guide design of sensory neuroprostheses sensitive to active sensing context.

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Section: High Speed Videographymentioning

confidence: 99%

Stimulation of somatosensory cortex locked to whisker motions in a mouse model of active sensing

Schroeder

Mariano

Telian

et al. 2013

2013 6th International IEEE/EMBS Conference on Neural Engineering (NER)

Self Cite

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Demonstrating a measurement protocol for studying comparative whisker movements with implications for the evolution of behaviour

Grant

Ryan

Breakell

2023

Journal of Neuroscience Methods

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Extraction of intended palpation times from facial EMGs in a mouse model of active sensing

Schroeder

Ritt

2013

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

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The rodent whisker system is a common model for somatosensory neuroscience and sensorimotor integration. In support of ongoing efforts to assess neural stimulation approaches for future sensory prostheses, in which we deliver optogenetic stimulation to the somatosensory cortex of behaving mice, we must coordinate feedback in real time with active sensing whisker motions. Here we describe methods for extracting the times of whisker palpations from bilateral bipolar facial electromyograms (EMG). In particular, we show onset times extracted offline from EMG envelopes lead whisker motion onsets extracted from high speed video (HSV) by ≈ 16 ms. While HSV provides ground truth for sensing motions, it is not a feasible source of real time information suitable for neurofeedback experiments. As an alternative, we find the temporal derivative of the EMG envelope reliably predicts whisker motion onsets with short latency. Thus EMG, although providing noisy and partial information, can serve well as an input to control algorithms for testing neural processing of active sensing information, and providing stimulation for artificial touch experiments.

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High-Speed Videography of Embodied Active Sensing in the Rodent Whisker System

Cited by 4 publications

References 52 publications

Stimulation of somatosensory cortex locked to whisker motions in a mouse model of active sensing

Stimulation of somatosensory cortex locked to whisker motions in a mouse model of active sensing

Demonstrating a measurement protocol for studying comparative whisker movements with implications for the evolution of behaviour

Extraction of intended palpation times from facial EMGs in a mouse model of active sensing

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