Display options
Cite
Hoeltzell PB, Dykes RW. Conductivity in the somatosensory cortex of the cat -- evidence for cortical anisotropy. Brain Res. 1979;177(1):61-82doi: 10.1016/0006-8993(79)90918-1.
Hoeltzell, P. B., & Dykes, R. W. (1979). Conductivity in the somatosensory cortex of the cat -- evidence for cortical anisotropy. Brain research, 177(1), 61-82. https://doi.org/10.1016/0006-8993(79)90918-1
Hoeltzell, P B, and Dykes, R W. "Conductivity in the somatosensory cortex of the cat -- evidence for cortical anisotropy." Brain research vol. 177,1 (1979): 61-82. doi: https://doi.org/10.1016/0006-8993(79)90918-1
Hoeltzell PB, Dykes RW. Conductivity in the somatosensory cortex of the cat -- evidence for cortical anisotropy. Brain Res. 1979 Nov 09;177(1):61-82. doi: 10.1016/0006-8993(79)90918-1. PMID: 497825.
Copy Download .nbib Format: NLM
Share it on
Full text links
Elsevier Science

Brain Res. 1979 Nov 09;177(1):61-82. doi: 10.1016/0006-8993(79)90918-1.

Conductivity in the somatosensory cortex of the cat -- evidence for cortical anisotropy.

Brain research

P B Hoeltzell, R W Dykes

PMID: 497825 DOI: 10.1016/0006-8993(79)90918-1

Abstract

Orthogonal conductivity components were determined for 3 depths in the somatosensory cortex of cats and relative vertical conductivities were determined for all depths. (2) For cortical layers II--III, the conductivity was nearly twice as large (1.7 times) in the anteroposterior direction as it was in the mediolateral direction, whereas in layer IV the conductivity in the mediolateral direction was about 1.4 times greater than it was in the anteroposterior direction. (3) With the exception of the anteroposterior direction of layers II--III and the mediolateral direction of layer IV, the vertical conductivity of the cortex was always greater than either of the horizontal conductivities. (4) Vertical conductivities varied with cortical depth. The lowest vertical conductivity occurred in layer I. It increased in layers II--III, dropped in layer IV, and increased again in layer VI to a value comparable to layers II--III. (5) Adjacent determinations of conductivity indicated that over short distances (1--2 mm) the cortex was electrically homogeneous. (6) These data suggest that the cellular organization of the somatosensory cortex changes markedly and abruptly with cortical depth. Furthermore, they suggest that a significant portion of the coritcal neuropile in layers II--III and in layer IV is highly polarized. The possible anatomical basis for this polarization is discussed as are the effects of cortical anisotropy upon conductivity measurements.

Similar articles

Cited by

MeSH terms

Publication Types

LinkOut - more resources