Electrophysiological evidence for an L-shaped interhemispheric connection in the cat
Transcallosal potentials evoked by electrical stimulation with rectangular pulses of 1 ms, 5 c/s and variable intensity were recorded from the cortical surface in cats anesthetized with ketamine hydrochloride. Sites of stimulation and recording were selected by means of a cartesian map of most of th...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Thieme Revinter Publicações
1989-12-01
|
| Series: | Arquivos de Neuro-Psiquiatria |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1989000400001&lng=en&tlng=en |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849308432112287744 |
|---|---|
| author | A Cukiert C. Timo-Iaria |
| author_facet | A Cukiert C. Timo-Iaria |
| author_sort | A Cukiert |
| collection | DOAJ |
| description | Transcallosal potentials evoked by electrical stimulation with rectangular pulses of 1 ms, 5 c/s and variable intensity were recorded from the cortical surface in cats anesthetized with ketamine hydrochloride. Sites of stimulation and recording were selected by means of a cartesian map of most of the neocortex. In addition to the well known transcallosal projection pattern it was found that stimulation of a restricted posterior area evokes low voltage potentials over the contralateral symmetric area while high voltage potentials are recorded from a few sites located at the ipsilateral anterior cortex and from the area symmetric as to the latter. This L-shaped transcallosal connection may be involved in complex cortical processes and is compatible with effective results of partial anterior callosotomies in patients with multifocal epilepsy and frontal bisynchronism. |
| format | Article |
| id | doaj-art-0aeb7cb011d044b781fe062ddf5701f0 |
| institution | Kabale University |
| issn | 1678-4227 |
| language | English |
| publishDate | 1989-12-01 |
| publisher | Thieme Revinter Publicações |
| record_format | Article |
| series | Arquivos de Neuro-Psiquiatria |
| spelling | doaj-art-0aeb7cb011d044b781fe062ddf5701f02025-08-20T03:54:28ZengThieme Revinter PublicaçõesArquivos de Neuro-Psiquiatria1678-42271989-12-0147438138410.1590/S0004-282X1989000400001S0004-282X1989000400001Electrophysiological evidence for an L-shaped interhemispheric connection in the catA Cukiert0C. Timo-Iaria1Universidade de São PauloUniversidade de São PauloTranscallosal potentials evoked by electrical stimulation with rectangular pulses of 1 ms, 5 c/s and variable intensity were recorded from the cortical surface in cats anesthetized with ketamine hydrochloride. Sites of stimulation and recording were selected by means of a cartesian map of most of the neocortex. In addition to the well known transcallosal projection pattern it was found that stimulation of a restricted posterior area evokes low voltage potentials over the contralateral symmetric area while high voltage potentials are recorded from a few sites located at the ipsilateral anterior cortex and from the area symmetric as to the latter. This L-shaped transcallosal connection may be involved in complex cortical processes and is compatible with effective results of partial anterior callosotomies in patients with multifocal epilepsy and frontal bisynchronism.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1989000400001&lng=en&tlng=en |
| spellingShingle | A Cukiert C. Timo-Iaria Electrophysiological evidence for an L-shaped interhemispheric connection in the cat Arquivos de Neuro-Psiquiatria |
| title | Electrophysiological evidence for an L-shaped interhemispheric connection in the cat |
| title_full | Electrophysiological evidence for an L-shaped interhemispheric connection in the cat |
| title_fullStr | Electrophysiological evidence for an L-shaped interhemispheric connection in the cat |
| title_full_unstemmed | Electrophysiological evidence for an L-shaped interhemispheric connection in the cat |
| title_short | Electrophysiological evidence for an L-shaped interhemispheric connection in the cat |
| title_sort | electrophysiological evidence for an l shaped interhemispheric connection in the cat |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1989000400001&lng=en&tlng=en |
| work_keys_str_mv | AT acukiert electrophysiologicalevidenceforanlshapedinterhemisphericconnectioninthecat AT ctimoiaria electrophysiologicalevidenceforanlshapedinterhemisphericconnectioninthecat |