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. Author manuscript; available in PMC: 2024 Jun 27.
Published in final edited form as: Vision Res. 2021 May 15;186:13–22. doi: 10.1016/j.visres.2021.03.013

Figure 4.

Figure 4.

Effects of GABA receptor antagonist picrotoxin (PTX, 100 µM) on surround depolarizing responses (ΔVCone(s)) of a L-cone to stimulus C1S1 (A), a L-cone to stimulus C3S3 (B) and an A-cone to stimulus C2S2 (C). We show in the lower traces of each panel that 100 µM PTX exerts no action on HCAs and HCBs, indicating that its actions on cone surround responses are not caused by changes in HC surround responses. The average surround responses of various types of cones elicited by C1S1, C2S2 and C3S3 in control medium (C) and in the presence of 100 µM PTX (P) are given in D.