Influence of feedback signals from Cats ara 21a on contrast response function of Area 17 neurons

Chun Wang, W Burke, Bogdan Dreher

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Feedback signals originating from cats extrastriate visual cortices exert mostly excitatory influence on neuronal responses in area 17 (A17). In the present study we found that feedback signals from one of the form-processing extrastriate cortical areas, area 21a (A21a), modulate the contrast response function of A17 neurons. Thus, in a majority (13/18) of A17 cells examined there was a significant change in contrast response function during inactivation of A21a. While the magnitude of the responses to stimulus contrasts tends to decrease during inactivation of A21a there was no systematic change in the mid-contrast, i.e. the contrast at which the response of individual neurons reached 50 of its maximum response. Further analysis indicated that the effect on the magnitude of responses was stronger at high contrast. These results suggest that an overall excitatory feedback from A21a may play a role in enhancing contrast response in A17 neurons, especially at high contrast.
Original languageEnglish
Title of host publicationAdvances in Cognitive Neurodynamics (II)
EditorsR Wang, G Gu
Place of PublicationUSA
PublisherSpringer
Pages421 - 427
Number of pages7
VolumeII
ISBN (Print)978-90-481-9694-4
DOIs
Publication statusPublished - 2010
Externally publishedYes
EventInternational Conference on Cognitive Neurodynamics - Zhejiang University, Hangzhou, China, USA
Duration: 1 Jan 2010 → …

Conference

ConferenceInternational Conference on Cognitive Neurodynamics
CityUSA
Period1/01/10 → …

Cite this

Wang, C., Burke, W., & Dreher, B. (2010). Influence of feedback signals from Cats ara 21a on contrast response function of Area 17 neurons. In R. Wang, & G. Gu (Eds.), Advances in Cognitive Neurodynamics (II) (Vol. II, pp. 421 - 427). USA: Springer. https://doi.org/10.1007/978-90-481-9695-1_67
Wang, Chun ; Burke, W ; Dreher, Bogdan. / Influence of feedback signals from Cats ara 21a on contrast response function of Area 17 neurons. Advances in Cognitive Neurodynamics (II). editor / R Wang ; G Gu. Vol. II USA : Springer, 2010. pp. 421 - 427
@inproceedings{28a78b6d363d49158eec29034691a768,
title = "Influence of feedback signals from Cats ara 21a on contrast response function of Area 17 neurons",
abstract = "Feedback signals originating from cats extrastriate visual cortices exert mostly excitatory influence on neuronal responses in area 17 (A17). In the present study we found that feedback signals from one of the form-processing extrastriate cortical areas, area 21a (A21a), modulate the contrast response function of A17 neurons. Thus, in a majority (13/18) of A17 cells examined there was a significant change in contrast response function during inactivation of A21a. While the magnitude of the responses to stimulus contrasts tends to decrease during inactivation of A21a there was no systematic change in the mid-contrast, i.e. the contrast at which the response of individual neurons reached 50 of its maximum response. Further analysis indicated that the effect on the magnitude of responses was stronger at high contrast. These results suggest that an overall excitatory feedback from A21a may play a role in enhancing contrast response in A17 neurons, especially at high contrast.",
author = "Chun Wang and W Burke and Bogdan Dreher",
year = "2010",
doi = "10.1007/978-90-481-9695-1_67",
language = "English",
isbn = "978-90-481-9694-4",
volume = "II",
pages = "421 -- 427",
editor = "R Wang and G Gu",
booktitle = "Advances in Cognitive Neurodynamics (II)",
publisher = "Springer",

}

Wang, C, Burke, W & Dreher, B 2010, Influence of feedback signals from Cats ara 21a on contrast response function of Area 17 neurons. in R Wang & G Gu (eds), Advances in Cognitive Neurodynamics (II). vol. II, Springer, USA, pp. 421 - 427, International Conference on Cognitive Neurodynamics, USA, 1/01/10. https://doi.org/10.1007/978-90-481-9695-1_67

Influence of feedback signals from Cats ara 21a on contrast response function of Area 17 neurons. / Wang, Chun; Burke, W; Dreher, Bogdan.

Advances in Cognitive Neurodynamics (II). ed. / R Wang; G Gu. Vol. II USA : Springer, 2010. p. 421 - 427.

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

TY - GEN

T1 - Influence of feedback signals from Cats ara 21a on contrast response function of Area 17 neurons

AU - Wang, Chun

AU - Burke, W

AU - Dreher, Bogdan

PY - 2010

Y1 - 2010

N2 - Feedback signals originating from cats extrastriate visual cortices exert mostly excitatory influence on neuronal responses in area 17 (A17). In the present study we found that feedback signals from one of the form-processing extrastriate cortical areas, area 21a (A21a), modulate the contrast response function of A17 neurons. Thus, in a majority (13/18) of A17 cells examined there was a significant change in contrast response function during inactivation of A21a. While the magnitude of the responses to stimulus contrasts tends to decrease during inactivation of A21a there was no systematic change in the mid-contrast, i.e. the contrast at which the response of individual neurons reached 50 of its maximum response. Further analysis indicated that the effect on the magnitude of responses was stronger at high contrast. These results suggest that an overall excitatory feedback from A21a may play a role in enhancing contrast response in A17 neurons, especially at high contrast.

AB - Feedback signals originating from cats extrastriate visual cortices exert mostly excitatory influence on neuronal responses in area 17 (A17). In the present study we found that feedback signals from one of the form-processing extrastriate cortical areas, area 21a (A21a), modulate the contrast response function of A17 neurons. Thus, in a majority (13/18) of A17 cells examined there was a significant change in contrast response function during inactivation of A21a. While the magnitude of the responses to stimulus contrasts tends to decrease during inactivation of A21a there was no systematic change in the mid-contrast, i.e. the contrast at which the response of individual neurons reached 50 of its maximum response. Further analysis indicated that the effect on the magnitude of responses was stronger at high contrast. These results suggest that an overall excitatory feedback from A21a may play a role in enhancing contrast response in A17 neurons, especially at high contrast.

U2 - 10.1007/978-90-481-9695-1_67

DO - 10.1007/978-90-481-9695-1_67

M3 - Conference Paper

SN - 978-90-481-9694-4

VL - II

SP - 421

EP - 427

BT - Advances in Cognitive Neurodynamics (II)

A2 - Wang, R

A2 - Gu, G

PB - Springer

CY - USA

ER -

Wang C, Burke W, Dreher B. Influence of feedback signals from Cats ara 21a on contrast response function of Area 17 neurons. In Wang R, Gu G, editors, Advances in Cognitive Neurodynamics (II). Vol. II. USA: Springer. 2010. p. 421 - 427 https://doi.org/10.1007/978-90-481-9695-1_67