Processing of spatial visual information along the pathway between the suprageniculate nucleus and the anterior ectosylvian cortex

Gabriella Eördegh, A. Nagy, Antal Berényi, G. Benedek

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This study describes the visual information coding ability of single neurons in the suprageniculate nucleus (Sg), and provides new data concerning the visual information flow in the suprageniculate/anterior ectosylvian pathways of the feline brain. The visual receptive fields of the Sg neurons have an internal structure rather similar to that described earlier in the anterior ectosylvian visual area (AEV). The majority of the Sg units can provide information via their discharge rate at the site of the visual stimulus within their large receptive fields. This suggests that they may serve as panoramic localizers. The sites of maximum responsivity of the Sg neurons are distributed over the whole investigated part of the visual field. There is no significant difference between the distributions of spatial location of maximum sensitivity of the AEV and the Sg neurons. The mean visual response latency of the Sg units was found to be significantly shorter than the mean latency of the AEV neurons, but there was no difference between the shortest latency values of the thalamic and the cortical single-units. This suggests that the visual information flows predominantly from the Sg to the AEV, though the cortico-thalamic route is also active. The Sg seems to represent a thalamic nucleus rather similar in function to both the first-order relays and the higher-order thalamic nuclei. These results, together with the fact that the superior colliculus provides the common ascending source of information to the suprageniculate/anterior ectosylvian pathway, suggest a unique function of the AEV and the Sg in sensorimotor integration.

Original languageEnglish
Pages (from-to)281-289
Number of pages9
JournalBrain Research Bulletin
Volume67
Issue number4
DOIs
Publication statusPublished - Oct 30 2005

Fingerprint

Neurons
Thalamic Nuclei
Visual Fields
Aptitude
Superior Colliculi
Felidae
Reaction Time
Spatial Processing
Brain

Keywords

  • AEV
  • Latency
  • Panoramic localizers
  • Spatial coding
  • Suprageniculate nucleus
  • Visual

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Processing of spatial visual information along the pathway between the suprageniculate nucleus and the anterior ectosylvian cortex. / Eördegh, Gabriella; Nagy, A.; Berényi, Antal; Benedek, G.

In: Brain Research Bulletin, Vol. 67, No. 4, 30.10.2005, p. 281-289.

Research output: Contribution to journalArticle

@article{ce880f0f481c44a59ce596a144fe5fe4,
title = "Processing of spatial visual information along the pathway between the suprageniculate nucleus and the anterior ectosylvian cortex",
abstract = "This study describes the visual information coding ability of single neurons in the suprageniculate nucleus (Sg), and provides new data concerning the visual information flow in the suprageniculate/anterior ectosylvian pathways of the feline brain. The visual receptive fields of the Sg neurons have an internal structure rather similar to that described earlier in the anterior ectosylvian visual area (AEV). The majority of the Sg units can provide information via their discharge rate at the site of the visual stimulus within their large receptive fields. This suggests that they may serve as panoramic localizers. The sites of maximum responsivity of the Sg neurons are distributed over the whole investigated part of the visual field. There is no significant difference between the distributions of spatial location of maximum sensitivity of the AEV and the Sg neurons. The mean visual response latency of the Sg units was found to be significantly shorter than the mean latency of the AEV neurons, but there was no difference between the shortest latency values of the thalamic and the cortical single-units. This suggests that the visual information flows predominantly from the Sg to the AEV, though the cortico-thalamic route is also active. The Sg seems to represent a thalamic nucleus rather similar in function to both the first-order relays and the higher-order thalamic nuclei. These results, together with the fact that the superior colliculus provides the common ascending source of information to the suprageniculate/anterior ectosylvian pathway, suggest a unique function of the AEV and the Sg in sensorimotor integration.",
keywords = "AEV, Latency, Panoramic localizers, Spatial coding, Suprageniculate nucleus, Visual",
author = "Gabriella E{\"o}rdegh and A. Nagy and Antal Ber{\'e}nyi and G. Benedek",
year = "2005",
month = "10",
day = "30",
doi = "10.1016/j.brainresbull.2005.06.036",
language = "English",
volume = "67",
pages = "281--289",
journal = "Brain Research Bulletin",
issn = "0361-9230",
publisher = "Elsevier Inc.",
number = "4",

}

TY - JOUR

T1 - Processing of spatial visual information along the pathway between the suprageniculate nucleus and the anterior ectosylvian cortex

AU - Eördegh, Gabriella

AU - Nagy, A.

AU - Berényi, Antal

AU - Benedek, G.

PY - 2005/10/30

Y1 - 2005/10/30

N2 - This study describes the visual information coding ability of single neurons in the suprageniculate nucleus (Sg), and provides new data concerning the visual information flow in the suprageniculate/anterior ectosylvian pathways of the feline brain. The visual receptive fields of the Sg neurons have an internal structure rather similar to that described earlier in the anterior ectosylvian visual area (AEV). The majority of the Sg units can provide information via their discharge rate at the site of the visual stimulus within their large receptive fields. This suggests that they may serve as panoramic localizers. The sites of maximum responsivity of the Sg neurons are distributed over the whole investigated part of the visual field. There is no significant difference between the distributions of spatial location of maximum sensitivity of the AEV and the Sg neurons. The mean visual response latency of the Sg units was found to be significantly shorter than the mean latency of the AEV neurons, but there was no difference between the shortest latency values of the thalamic and the cortical single-units. This suggests that the visual information flows predominantly from the Sg to the AEV, though the cortico-thalamic route is also active. The Sg seems to represent a thalamic nucleus rather similar in function to both the first-order relays and the higher-order thalamic nuclei. These results, together with the fact that the superior colliculus provides the common ascending source of information to the suprageniculate/anterior ectosylvian pathway, suggest a unique function of the AEV and the Sg in sensorimotor integration.

AB - This study describes the visual information coding ability of single neurons in the suprageniculate nucleus (Sg), and provides new data concerning the visual information flow in the suprageniculate/anterior ectosylvian pathways of the feline brain. The visual receptive fields of the Sg neurons have an internal structure rather similar to that described earlier in the anterior ectosylvian visual area (AEV). The majority of the Sg units can provide information via their discharge rate at the site of the visual stimulus within their large receptive fields. This suggests that they may serve as panoramic localizers. The sites of maximum responsivity of the Sg neurons are distributed over the whole investigated part of the visual field. There is no significant difference between the distributions of spatial location of maximum sensitivity of the AEV and the Sg neurons. The mean visual response latency of the Sg units was found to be significantly shorter than the mean latency of the AEV neurons, but there was no difference between the shortest latency values of the thalamic and the cortical single-units. This suggests that the visual information flows predominantly from the Sg to the AEV, though the cortico-thalamic route is also active. The Sg seems to represent a thalamic nucleus rather similar in function to both the first-order relays and the higher-order thalamic nuclei. These results, together with the fact that the superior colliculus provides the common ascending source of information to the suprageniculate/anterior ectosylvian pathway, suggest a unique function of the AEV and the Sg in sensorimotor integration.

KW - AEV

KW - Latency

KW - Panoramic localizers

KW - Spatial coding

KW - Suprageniculate nucleus

KW - Visual

UR - http://www.scopus.com/inward/record.url?scp=25144476051&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=25144476051&partnerID=8YFLogxK

U2 - 10.1016/j.brainresbull.2005.06.036

DO - 10.1016/j.brainresbull.2005.06.036

M3 - Article

VL - 67

SP - 281

EP - 289

JO - Brain Research Bulletin

JF - Brain Research Bulletin

SN - 0361-9230

IS - 4

ER -