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{1573} | |||||||
PMID-36070680 Extracellular vesicles mediate the communication of adipose tissue with brain and promote cognitive impairment associated with insulin resistance
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{1555} | |||||||
Recently I've been underwhelmed by the performance of adaptive optics (AO) for imaging head-fixed cranial-window mice. There hasn't been much of an improvement, despite significant optimization effort. This begs the question: where are AO microscopes used? When the purpose of a paper is to explain and qualify an novel AO approach, the improvement is always good, >> 2x. Yet, in the one paper (first below) when the purpose was neuroscience, not optics, the results are less inspiring. Are the results from the optics papers cherry-picked? Thalamus provides layer 4 of primary visual cortex with orientation- and direction-tuned inputs Wenzhi Sun, Zhongchao Tan, Brett D Mensh & Na Ji 2016 https://www.nature.com/articles/nn.4196
Direct wavefront sensing for high-resolution in vivo imaging in scattering tissue Kai Wang, Wenzhi Sun, Christopher T. Richie, Brandon K. Harvey, Eric Betzig & Na Ji, 2015 https://www.nature.com/articles/ncomms8276
Multiplexed aberration measurement for deep tissue imaging in vivo Chen Wang, Rui Liu, Daniel E Milkie, Wenzhi Sun, Zhongchao Tan, Aaron Kerlin, Tsai-Wen Chen, Douglas S Kim & Na Ji 2014 https://www.nature.com/articles/nmeth.3068
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{1554} |
ref: -2021
tags: FIBSEM electron microscopy presynaptic plasticity activity Funke
date: 10-12-2021 17:03 gmt
revision:0
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Ultrastructural readout of in vivo synaptic activity for functional connectomics
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{1478} |
ref: -2013
tags: 2p two photon STED super resolution microscope synapse synaptic plasticity
date: 08-14-2020 01:34 gmt
revision:3
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PMID-23442956 Two-Photon Excitation STED Microscopy in Two Colors in Acute Brain Slices
PMID-29932052 Chronic 2P-STED imaging reveals high turnover of spines in the hippocampus in vivo | |||||||
{1499} | |||||||
PMID-24877017 Optimal lens design and use in laser-scanning microscopy
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{1468} |
ref: -2013
tags: microscopy space bandwidth product imaging resolution UCSF
date: 06-17-2019 14:45 gmt
revision:0
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How much information does your microscope transmit?
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{1461} |
ref: -2019
tags: super-resolution microscopy fluorescent protein molecules
date: 05-28-2019 16:02 gmt
revision:3
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PMID-30997987 Chemistry of Photosensitive Fluorophores for Single-Molecule Localization Microscopy
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{1456} | |||||||
PMID-21360044 Robust penetrating microelectrodes for neural interfaces realized by titanium micromachining
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{1436} |
ref: -0
tags: Airy light sheet microscopy attenuation compensation LSM imaging
date: 02-19-2019 04:51 gmt
revision:1
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Light-sheet microscopy with attenuation-compensated propagation-invariant beams
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{1430} | |||||||
PMID-28650477 Video rate volumetric Ca2+ imaging across cortex using seeded iterative demixing (SID) microscopy
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{1327} | |||||||
PMID-26436341 Three-dimensional macroporous nanoelectronic networks as minimally invasive brain probes.
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{1384} | |||||||
PMID-28246640 Ultraflexible nanoelectronic probes form reliable, glial scar–free neural integration
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{1010} | |||||||
PMID-4708761 Design, Fabrication, and In Vivo Behavior of Chronic Recording Intracortical Microelectrodes
____References____ Salcman, Michael and Bak, Martin J. Design, Fabrication, and In Vivo Behavior of Chronic Recording Intracortical Microelectrodes Biomedical Engineering, IEEE Transactions on BME-20 4 253 -260 (1973) | |||||||
{1236} | |||||||
PMID-23580530 Injectable, cellular-scale optoelectronics with applications for wireless optogenetics.
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{1356} | |||||||
PMID-27705958 Chronic in vivo stability assessment of carbon fiber microelectrode arrays.
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{1381} | |||||||
PMID-28084398 Highly Stable Glassy Carbon Interfaces for Long-Term Neural Stimulation and Low-Noise Recording of Brain Activity
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{1367} |
ref: -0
tags: microstimulation rat cortex measurement ICMS spread
date: 01-26-2017 02:52 gmt
revision:0
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PMID-12878710 Spatiotemporal effects of microstimulation in rat neocortex: a parametric study using multielectrode recordings.
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{1362} |
ref: -0
tags: serial electron microscopy Lichtman reconstruction nervous tissue
date: 01-17-2017 23:32 gmt
revision:0
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PMID-26232230 Saturated Reconstruction of a Volume of Neocortex.
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{1360} | |||||||
PMID-22750248 In vivo effects of L1 coating on inflammation and neuronal health at the electrode-tissue interface in rat spinal cord and dorsal root ganglion.
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{1270} |
ref: -0
tags: gold micrograin recording electrodes electroplating impedance
date: 10-17-2016 20:28 gmt
revision:5
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PMID-23071004 Gold nanograin microelectrodes for neuroelectronic interfaces.
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{1334} | |||||||
PMID-26627311 Monolithically Integrated μLEDs on Silicon Neural Probes for High-Resolution Optogenetic Studies in Behaving Animals.
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{1251} | |||||||
IEEE-938305 (pdf) High Density Interconnects and flexible hybrid assemblies for active biomedical implants
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{1298} | |||||||
PMID-13539663 Subcortical threshold voltages as a function of sine wave frequencies Brown and Brackett
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{1297} | |||||||
PMID-4550167[1] Sensory responses elicited by subcortical high frequency electrical stimulation in man. -- everything innovative has already been done in the 70s!
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{875} | |||||||
One of the goals/needs of the lab is to be able to stimluate and record nervous tissue at the same time. We do not have immediate access to optogenetic methods, but what about lower frequency EM stimulation? The idea: if you put the stimulation frequency outside the recording system bandwidth, there is no need to switch, and indeed no reason you can't stimulate and record at the same time. Hence, I very briefly checked for the effects of RF stimulation on nervous tissue.
Conclusion: worth a shot, especially given the paper by Alberts et al 1972.
____References____
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{1281} | |||||||
Various microelectrode patents:
Microelectronics:
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{1278} | |||||||
PMID-23860226 A carbon-fiber electrode array for long-term neural recording.
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{1246} |
ref: -0
tags: parylene microchannel micromolding glass transition temperature microfluidics
date: 06-28-2013 17:34 gmt
revision:3
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Parylene micromolding, a rapid low-cost fabrication method for parylene microchannel
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{1193} | |||||||
PMID-23010756[0] Comprehensive characterization and failure modes of tungsten microwire arrays in chronic neural implants.
____References____
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{1237} | |||||||
PMID-19963267 Quantitative analysis of the tissue response to chronically implanted microwire electrodes in rat cortex.
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{999} | |||||||
IEEE-4065599 (pdf) Comments on Microelectrodes
____References____ ' ''' () | |||||||
{1227} |
ref: Ledochowitsch-2011.01
tags: Ledochowitsch transparent micro ECoG Peter
date: 01-30-2013 07:01 gmt
revision:2
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PMID-22254956[0] A transparent μECoG array for simultaneous recording and optogenetic stimulation.
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{823} | |||||||
PMID-20577628[0] Seven years of recording from monkey cortex with a chronically implanted multiple electrode.
____References____
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{781} | |||||||
PMID-16198003[0] Response of brain tissue to chronically implanted neural electrodes
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{946} | |||||||
PMID-1256090[0] A new chronic recording intracortical microelectrode
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{748} | |||||||
PMID-18485471[0] Characterization of microglial attachment and cytokine release on biomaterials of differing surface chemistry
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{1201} | |||||||
PMID-17946847[0] Preliminary study of multichannel flexible neural probes coated with hybrid biodegradable polymer. ____References____
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{1217} | |||||||
PMID-16921203[0] Effects of insertion conditions on tissue strain and vascular damage during neuroprosthetic device insertion.
____References____
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{1216} |
ref: Lee-2005.12
tags: micromotion silicon michigan array simulation strain
date: 01-28-2013 03:13 gmt
revision:1
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PMID-16317231[0] Biomechanical analysis of silicon microelectrode-induced strain in the brain.
____References____
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{898} | |||||||
PMID-19486899[0] Toward a comparison of microelectrodes for acute and chronic recordings.
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{1214} | |||||||
PMID-7972766 Brain and cerebrospinal fluid motion: real-time quantification with M-mode MR imaging.
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{311} | |||||||
PMID-9350963 A floating microwire technique for multichannel neural recording and stimulation in the awake rat
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{897} | |||||||
PMID-21654037[0] In vivo deployment of mechanically adaptive nanocomposites for intracortical microelectrodes
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{750} |
ref: Menei-1994.09
tags: microspheres beads polycaprolactone biocompatible drug delivery histology
date: 01-27-2013 20:54 gmt
revision:3
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PMID-7814435 Fate and biocompatibility of three types of microspheres implanted into the brain.
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{737} | |||||||
PMID-16045910[0] Neuronal cell loss accompanies the brain tissue response to chronically implanted silicon microelectrode arrays.
____References____
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{1024} |
ref: COLLIAS-1957.05
tags: histology microelectrode vasulature
date: 01-23-2013 23:56 gmt
revision:4
[3] [2] [1] [0] [head]
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PMID-13429398[0] Histopathological changes produced by implanted electrodes in cat brains; comparison with histopathological changes in human and experimental puncture wounds.
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{1102} |
ref: Gilletti-2006.09
tags: electrode micromotion histology GFAP variable reluctance
date: 01-04-2013 02:28 gmt
revision:2
[1] [0] [head]
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PMID-16921202[0] Brain micromotion around implants in the rodent somatosensory cortex.
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{1190} | |||||||
PMID-16045910[0] Neuronal cell loss accompanies the brain tissue response to chronically implanted silicon microelectrode arrays.
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{1189} |
ref: -0
tags: microelectrode array flexible PDMS via interconnect Georgia
date: 01-04-2013 00:33 gmt
revision:0
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IEEE-6197244 (pdf) A PDMS-Based Integrated Stretchable Microelectrode Array (isMEA) for Neural and Muscular Surface Interfacing | |||||||
{1178} | |||||||
PMID-23160191 Novel flexible Parylene neural probe with 3D sheath structure for enhancing tissue integration
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{1139} |
ref: -0
tags: striatum microstimulation abnormal myclonus dyskinesia
date: 02-24-2012 19:44 gmt
revision:0
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PMID-21508304 Discontinuous Long-Train Stimulation in the Anterior Striatum in Monkeys Induces Abnormal Behavioral States
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{1074} | |||||||
PMID-19559747[0] Deep brain stimulation in neurological diseases and experimental models: from molecule to complex behavior.
____References____
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PMID-9504843 Axons, but not cell bodies, are activated by electrical stimulation in cortical gray matter. I. Evidence from chronaxie measurements.
PMID-9504844 Axons, but not cell bodies, are activated by electrical stimulation in cortical gray matter. II. Evidence from selective inactivation of cell bodies and axon initial segments.
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{1103} | |||||||
PMID-16317234 A finite-element model of the mechanical effects of implantable microelectrodes in the cerebral cortex.
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{773} | |||||||
Recently I've been working on a current-controlled microstimulator for the lab, and have not been at all satisfied with the performance - hence, I decided to redesign it. Since it is a digitally current-controlled stimulator, and the current is set with a DAC (MCP4822), we need a voltage controlled current source. Here is one design:
What I really need is a high-side regulated current source; after some fiddling, here is what I came up with:
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{925} | |||||||
PMID-9136763[0] Reconstructing the engram: simultaneous, multisite, many single neuron recordings.
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{1011} | |||||||
IEEE-4120642 (pdf) Mechanical Factors in the Design of Chronic Recording Intracortical Microelectrodes ____References____ Goldstein, Seth R. and Salcman, Michael Mechanical Factors in the Design of Chronic Recording Intracortical Microelectrodes Biomedical Engineering, IEEE Transactions on BME-20 4 260 -269 (1973) | |||||||
{240} |
ref: MolinaLuna-2007.03
tags: ICMS microstimulation cortical thin-film electrodes histology MEA
date: 01-03-2012 22:54 gmt
revision:2
[1] [0] [head]
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PMID-17178423[0] Cortical stimulation mapping using epidurally implanted thin-film microelectrode arrays.
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{1014} |
ref: GULD-1964.07
tags: platinum iridium microelectrode eltrolytic etching original
date: 01-03-2012 19:05 gmt
revision:2
[1] [0] [head]
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PMID-14199966[0] A Glass-covered platinum microelectrode
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{366} | |||||||
PMID-17271187[0] Dynamic control of extracellular environment in in vitro neural recording systems.
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{831} | |||||||
PMID-17271195[0] Models of stimulation artifacts applied to integrated circuit design.
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{310} | |||||||
PMID-10592339[0] Long term neural recording characteristics of wire microelectrode arrays implanted in cerebral cortex
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{738} | |||||||
PMID-15651568[0] A compact large voltage-compliance high output-impedance programmable current source for implantable microstimulators.
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{365} | |||||||
IEEE-717081 (pdf) An Implantable Multichannel Digital neural recording system for a micromachined sieve electrode
____References____ Akin, T. and Najafi, K. and Bradley, R.M. Solid-State Sensors and Actuators, 1995 and Eurosensors IX.. Transducers '95. The 8th International Conference on 1 51 -54 (1995) | |||||||
{917} | |||||||
PMID-4888623[0] Electrical stimulation of the brain in behavioral context.
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{60} |
ref: Douglas-1991.01
tags: functional microcircuit cat visual cortex microstimulation
date: 12-29-2011 05:12 gmt
revision:3
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PMID-1666655[0] A functional microcircuit for cat visual cortex
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{919} | |||||||
PMID-8815302[0] Electrical stimulation of neural tissue to evoke behavioral responses
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{834} | |||||||
IEEE-4464125 (pdf) Stimulus-Artifact Elimination in a Multi-Electrode System
Brown EA, Ross JD, Blum RA, Yoonkey N, Wheeler BC, and DeWeerth SP (2008) Stimulus-Artifact Elimination in a Multi-Electrode System. IEEE TRans. Biomed. Circuit Sys. 2. 10-21 | |||||||
{926} | |||||||
PMID-10196571[0] Simultaneous encoding of tactile information by three primate cortical areas
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{944} | |||||||
IEEE-4352820 (pdf) Constant-Current Adjustable-Waveform Microstimulator for an Implantable Hybrid Neural Prosthesis
____References____ Hassell, T.J. and Jedlicka, S.S. and Rickus, J.L. and Irazoqui, P.P. Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE 2436 -2439 (2007) | |||||||
{622} | |||||||
PMID-16835359[0] Direct and indirect activation of cortical neurons by electrical microstimulation.
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{832} |
ref: Jimbo-2003.02
tags: MEA microstimulation artifact supression
date: 12-17-2011 01:41 gmt
revision:2
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PMID-12665038[0] A system for MEA-based multisite stimulation.
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{65} | |||||||
follow up paper: http://spikelab.jbpierce.org/Publications/LaubachEMBS2003.pdf
____References____ Laubach, M. and Arieh, Y. and Luczak, A. and Oh, J. and Xu, Y. Bioengineering Conference, 2003 IEEE 29th Annual, Proceedings of 17 - 18 (2003.03) | |||||||
{69} | |||||||
PMID-17057705 Long-term motor cortex plasticity induced by an electronic neural implant.
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{810} |
ref: -0
tags: circular polarized antenna microstrip ultrawideband
date: 02-03-2010 21:30 gmt
revision:1
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excellent! Ultra-wideband circular polarized microstrip archimedean spiral | |||||||
{807} |
ref: -0
tags: reynolds number microorganisms engineering math fluid mechanics
date: 01-25-2010 19:17 gmt
revision:0
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http://jilawww.colorado.edu/perkinsgroup/Purcell_life_at_low_reynolds_number.pdf - great! Never thought about this before.
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{772} |
ref: -0
tags: xmos microcontroller microporcessor threading
date: 08-11-2009 16:15 gmt
revision:0
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PMID-17237780[0] Switching from automatic to controlled action by monkey medial frontal cortex.
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http://www.biotele.com/Delgado.htm
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http://hardm.ath.cx:88/pdf/lowpowermicrocontrollers.pdf also see IBM's eLite DSP project. | |||||||
{42} |
ref: bookmark-0
tags: microdrilling surgery craniotomy impedance
date: 0-0-2006 0:0
revision:0
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http://www.pathscientific.com/products.html Pathformer is an electrosurgical hand-held meidcal device that cuts holes in nails and skin. It operates on mesoscissioning technology, cutting the nail/skin with a microcutting tool, using skin impedance as a feedback for stopping the cutting intervention. Pathformer is approved by FDA for creating holes in nails for treating subungual hematoma (black toe). |