Version 1
: Received: 1 December 2021 / Approved: 10 December 2021 / Online: 10 December 2021 (12:22:39 CET)
Version 2
: Received: 10 December 2021 / Approved: 10 December 2021 / Online: 10 December 2021 (14:29:15 CET)
Niu, X.; Huang, S.; Zhu, M.; Wang, Z.; Shi, L. Surround Modulation Properties of Tectal Neurons in Pigeons Characterized by Moving and Flashed Stimuli. Animals2022, 12, 475.
Niu, X.; Huang, S.; Zhu, M.; Wang, Z.; Shi, L. Surround Modulation Properties of Tectal Neurons in Pigeons Characterized by Moving and Flashed Stimuli. Animals 2022, 12, 475.
Niu, X.; Huang, S.; Zhu, M.; Wang, Z.; Shi, L. Surround Modulation Properties of Tectal Neurons in Pigeons Characterized by Moving and Flashed Stimuli. Animals2022, 12, 475.
Niu, X.; Huang, S.; Zhu, M.; Wang, Z.; Shi, L. Surround Modulation Properties of Tectal Neurons in Pigeons Characterized by Moving and Flashed Stimuli. Animals 2022, 12, 475.
Abstract
Surround modulation is a phenomenon whereby costimulation of the extra-classical receptive field and classical receptive field would modulate the visual responses induced individually by classical receptive field. However, there lacks systematic study about surround modulation properties existing in avian optic tectum. In this study, neuronal activities are recorded from pigeon optic tectum, and the responses to moving and flashed squares and bars of different sizes are compared. The statistical results showed that most tectal neurons presented surround suppression as stimuli size grew larger both in moving and flashed paradigms, and the suppression degree induced by larger flashed square was comparable with that by moving one when it crossed near the cell’s RF center, which corresponds to fully surrounding condition. The suppression degree grew weaker when the stimuli move across the RF border, which corresponds to partially surrounding condition. Meanwhile, the fully surround suppression induced by flashed square was also more intense than partially surrounded by flashed bars. The results provide new insight for understanding the spatial arrangement of lateral inhibitions from feedback or feedforward streams, which would help to make clear the generation mechanism of surround modulation found in avian optic tectum.
Biology and Life Sciences, Neuroscience and Neurology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
