Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Surround Modulation Properties of Tectal Neurons in Pigeon Characterized by Moving and Flashed Stimuli

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)

A peer-reviewed article of this Preprint also exists.

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. Animals 2022, 12, 475.

Journal reference: Animals 2022, 12, 475
DOI: 10.3390/ani12040475

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.

Keywords

surround suppression; extra-classical receptive field; optic tectum; size tuning

Subject

LIFE SCIENCES, Other

Comments (1)

Comment 1
Received: 10 December 2021
Commenter: Xiaoke Niu
Commenter's Conflict of Interests: Author
Comment: We have added the information regarding Ethics Committee approval in "Ethics approval and consent to participate" part of the revised manuscript (All experiments were performed in accordance with the Society’s Policies on the Use of Animals and Humans in Neuroscience Research and approved by the Life Science Ethical Review Committee of Zhengzhou University (No SYXK 2019-0002).
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