The Conductivity of Living Tissues

Schwan, Herman P.; Kay, Calvin F.

doi:10.1111/j.1749-6632.1957.tb36701.x

Cited by 196 publications

(79 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, although the influence of heterogeneous and anisotropic tissue on the electric field was generally in the sub-millimetre level there were cases where the electric field diameter was altered by up to 1.2 mm at the inner isolevel (Table 4). and Kay [33] are measured in tissue samples at frequencies way beyond standard DBS frequencies. Other factors that may influence measurements performed in vivo is the tissue temperature, bleeding, leakage of CSF, decreased blood-flow due to anaesthetic agents, or increased pressure caused by the probe [34].…”

Section: Discussionmentioning

confidence: 99%

Influence of heterogeneous and anisotropic tissue conductivity on electric field distribution in deep brain stimulation

Åström

Lemaire

Wårdell

2011

Med Biol Eng Comput

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Influence of heterogeneous and anisotropic tissue conductivity on electric field distribution in deep brain stimulation

Åström

Lemaire

Wårdell

2011

Med Biol Eng Comput

View full text Add to dashboard Cite

show abstract

“…20 However, the capacity of the neural membrane is included for computing the excitation of the target neurons. The boundary conditions are given by the voltages at the electrodes, and by the fact that no current¯ows out of the simulated volume.…”

Section: Methodsmentioning

confidence: 99%

Epidural electrical stimulation of posterior structures of the human lumbosacral cord: 2. quantitative analysis by computer modeling

2000

View full text Add to dashboard Cite

Objectives: Analysis of the computed recruitment order of an ensemble of ventral and dorsal root ®bers should enlighten the relation between the position of a bipolar electrode and the observed order of muscle twitches. Material and methods: Thresholds of selected spinal root ®bers are investigated in a two step procedure. First the electric ®eld generated by the electrodes is computed with the Finite Element Method. In the second step the calculated voltage pro®le along each target neuron is used as input data for a cable model. For every electrode position the electrical excitability is analyzed for 12 large diameter ventral and dorsal root ®bers of the second and fourth lumbar and ®rst sacral segment. The predictions of the neural responses of any target ®ber are based on the activating function concept and on the more accurate computer simulations of the electrical behavior of all nodes and internodes in the vicinity of the electrode.

show abstract

“…In 1959, Nyboer [3] reported that the resistance of biological conductor is same as non-biological conductor. Later on Schwan and Kay [4], [5] reported that reactance of the bio impedance is supported by capacitive effect of cell membrane, tissue interfaces, and structural features. The capacitive effect depends on the frequency of the injected current.…”

Section: Review Of Literaturementioning

confidence: 99%