PMID- 28471714 OWN - NLM STAT- MEDLINE DCOM- 20180207 LR - 20220202 IS - 1545-4126 (Electronic) IS - 0147-006X (Print) IS - 0147-006X (Linking) VI - 40 DP - 2017 Jul 25 TI - Circuits and Mechanisms for Surround Modulation in Visual Cortex. PG - 425-451 LID - 10.1146/annurev-neuro-072116-031418 [doi] AB - Surround modulation (SM) is a fundamental property of sensory neurons in many species and sensory modalities. SM is the ability of stimuli in the surround of a neuron's receptive field (RF) to modulate (typically suppress) the neuron's response to stimuli simultaneously presented inside the RF, a property thought to underlie optimal coding of sensory information and important perceptual functions. Understanding the circuit and mechanisms for SM can reveal fundamental principles of computations in sensory cortices, from mouse to human. Current debate is centered over whether feedforward or intracortical circuits generate SM, and whether this results from increased inhibition or reduced excitation. Here we present a working hypothesis, based on theoretical and experimental evidence, that SM results from feedforward, horizontal, and feedback interactions with local recurrent connections, via synaptic mechanisms involving both increased inhibition and reduced recurrent excitation. In particular, strong and balanced recurrent excitatory and inhibitory circuits play a crucial role in the computation of SM. FAU - Angelucci, Alessandra AU - Angelucci A AD - Department of Ophthalmology and Visual Science, Moran Eye Institute, University of Utah, Salt Lake City, Utah 84132; email: alessandra.angelucci@hsc.utah.edu , ma.bijanzadeh@gmail.com , larsnurminen@gmail.com , sammerlin7@gmail.com , freddieneuron@gmail.com. FAU - Bijanzadeh, Maryam AU - Bijanzadeh M AD - Department of Ophthalmology and Visual Science, Moran Eye Institute, University of Utah, Salt Lake City, Utah 84132; email: alessandra.angelucci@hsc.utah.edu , ma.bijanzadeh@gmail.com , larsnurminen@gmail.com , sammerlin7@gmail.com , freddieneuron@gmail.com. FAU - Nurminen, Lauri AU - Nurminen L AD - Department of Ophthalmology and Visual Science, Moran Eye Institute, University of Utah, Salt Lake City, Utah 84132; email: alessandra.angelucci@hsc.utah.edu , ma.bijanzadeh@gmail.com , larsnurminen@gmail.com , sammerlin7@gmail.com , freddieneuron@gmail.com. FAU - Federer, Frederick AU - Federer F AD - Department of Ophthalmology and Visual Science, Moran Eye Institute, University of Utah, Salt Lake City, Utah 84132; email: alessandra.angelucci@hsc.utah.edu , ma.bijanzadeh@gmail.com , larsnurminen@gmail.com , sammerlin7@gmail.com , freddieneuron@gmail.com. FAU - Merlin, Sam AU - Merlin S AD - Department of Ophthalmology and Visual Science, Moran Eye Institute, University of Utah, Salt Lake City, Utah 84132; email: alessandra.angelucci@hsc.utah.edu , ma.bijanzadeh@gmail.com , larsnurminen@gmail.com , sammerlin7@gmail.com , freddieneuron@gmail.com. FAU - Bressloff, Paul C AU - Bressloff PC AD - Department of Mathematics, University of Utah, Salt Lake City, Utah 84132; email: bressloff@math.utah.edu. LA - eng GR - R01 EY019743/EY/NEI NIH HHS/United States GR - U01 NS099702/NS/NINDS NIH HHS/United States GR - R01 EY026812/EY/NEI NIH HHS/United States GR - T32 EY024234/EY/NEI NIH HHS/United States GR - P30 EY014800/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Review DEP - 20170503 PL - United States TA - Annu Rev Neurosci JT - Annual review of neuroscience JID - 7804039 SB - IM MH - Animals MH - Feedback, Physiological/physiology MH - Models, Neurological MH - Neurons/*physiology MH - Photic Stimulation MH - Visual Cortex/*physiology MH - Visual Fields/physiology MH - Visual Pathways/*physiology MH - Visual Perception/*physiology PMC - PMC5697758 MID - NIHMS919606 OTO - NOTNLM OT - extrastriate cortex OT - feedback OT - horizontal connection OT - primary visual cortex OT - recurrent circuits OT - striate cortex EDAT- 2017/05/05 06:00 MHDA- 2018/02/08 06:00 PMCR- 2018/07/25 CRDT- 2017/05/05 06:00 PHST- 2017/05/05 06:00 [pubmed] PHST- 2018/02/08 06:00 [medline] PHST- 2017/05/05 06:00 [entrez] PHST- 2018/07/25 00:00 [pmc-release] AID - 10.1146/annurev-neuro-072116-031418 [doi] PST - ppublish SO - Annu Rev Neurosci. 2017 Jul 25;40:425-451. doi: 10.1146/annurev-neuro-072116-031418. Epub 2017 May 3.