Literature DB >> 26339528

Ionic charge transport between blockages: Sodium cation conduction in freshly excised bulk brain tissue.

David Emin1, Massoud Akhtari2, B M Ellingson3, G W Mathern4.   

Abstract

We analyze the transient-dc and frequency-dependent electrical conductivities between blocking electrodes. We extend this analysis to measurements of ions' transport in freshly excised bulk samples of human brain tissue whose complex cellular structure produces blockages. The associated ionic charge-carrier density and diffusivity are consistent with local values for sodium cations determined non-invasively in brain tissue by MRI (NMR) and diffusion-MRI (spin-echo NMR). The characteristic separation between blockages, about 450 microns, is very much shorter than that found for sodium-doped gel proxies for brain tissue, >1 cm.

Entities:  

Year:  2015        PMID： 26339528      PMCID： PMC4537479          DOI： 10.1063/1.4928652

Source DB:  PubMed          Journal:  AIP Adv            Impact factor:   1.548


  8 in total

1.  How ions affect the structure of water.

Authors:  Barbara Hribar; Noel T Southall; Vojko Vlachy; Ken A Dill
Journal:  J Am Chem Soc       Date:  2002-10-16       Impact factor: 15.419

2.  Low-temperature ac conductivity of adiabatic small-polaronic hopping in disordered systems.

Authors: 
Journal:  Phys Rev B Condens Matter       Date:  1992-10-15

3.  Sodium ion apparent diffusion coefficient in living rat brain.

Authors:  James A Goodman; Christopher D Kroenke; G Larry Bretthorst; Joseph J H Ackerman; Jeffrey J Neil
Journal:  Magn Reson Med       Date:  2005-05       Impact factor: 4.668

4.  Low-frequency conductivity tensor of rat brain tissues inferred from diffusion MRI.

Authors:  Masaki Sekino; Hiroyuki Ohsaki; Sachiko Yamaguchi-Sekino; Norio Iriguchi; Shoogo Ueno
Journal:  Bioelectromagnetics       Date:  2009-09       Impact factor: 2.010

5.  Variable anisotropic brain electrical conductivities in epileptogenic foci.

Authors:  M Akhtari; M Mandelkern; D Bui; N Salamon; H V Vinters; G W Mathern
Journal:  Brain Topogr       Date:  2010-05-04       Impact factor: 3.020

6.  Electrical conductivity of the hippocampal CA1 layers and application to current-source-density analysis.

Authors:  J Holsheimer
Journal:  Exp Brain Res       Date:  1987       Impact factor: 1.972

7.  Electrical conductivities of the freshly excised cerebral cortex in epilepsy surgery patients; correlation with pathology, seizure duration, and diffusion tensor imaging.

Authors:  M Akhtari; N Salamon; R Duncan; I Fried; G W Mathern
Journal:  Brain Topogr       Date:  2006-07-21       Impact factor: 3.020

8.  A method for estimating intracellular sodium concentration and extracellular volume fraction in brain in vivo using sodium magnetic resonance imaging.

Authors:  Guillaume Madelin; Richard Kline; Ronn Walvick; Ravinder R Regatte
Journal:  Sci Rep       Date:  2014-04-23       Impact factor: 4.379
  8 in total
  4 in total

1.  Distinctive ionic transport of freshly excised human epileptogenic brain tissue.

Authors:  David Emin; Aria Fallah; Noriko Salamon; Gary Mathern; Massoud Akhtari
Journal:  Appl Phys Lett       Date:  2021-12-20       Impact factor: 3.791

2.  Understanding the sodium cation conductivity of human epileptic brain tissue.

Authors:  David Emin; Aria Fallah; Noriko Salamon; William Yong; Andrew Frew; Gary Mathern; Massoud Akhtari
Journal:  AIP Adv       Date:  2021-04-16       Impact factor: 1.548

3.  Annealing effect on UV-illuminated recovery in gas response of graphene-based NO2 sensors.

Authors:  Chia-Ming Yang; Tsung-Cheng Chen; Yu-Cheng Yang; M Meyyappan
Journal:  RSC Adv       Date:  2019-07-29       Impact factor: 4.036

4.  Investigation of anti-aging of SBS modified bitumen containing surface organic layered double hydroxide.

Authors:  Canlin Zhang; Hongjun Dong; Ting Wang; Song Xu; Jun He; Lei Fang; Changbin Hu
Journal:  RSC Adv       Date:  2021-06-23       Impact factor: 4.036
  4 in total

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