Premium
Spike synchronization in cat primary visual cortex depends on similarity of surround‐suppression magnitude
Author(s) -
Naito Tomoyuki,
Kasamatsu Takuji,
Sato Hiromichi
Publication year - 2014
Publication title -
european journal of neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.346
H-Index - 206
eISSN - 1460-9568
pISSN - 0953-816X
DOI - 10.1111/ejn.12469
Subject(s) - visual cortex , spike (software development) , neuroscience , magnitude (astronomy) , similarity (geometry) , surround suppression , biology , artificial intelligence , psychology , computer science , physics , visual perception , perception , astronomy , software engineering , image (mathematics)
In the primary visual cortex ( V 1), the spike synchronization seen in neuron pairs with non‐overlapping receptive fields can be explained by similarities in their preferred orientation ( PO ). However, this is not true for pairs with overlapping receptive fields, as they can still exhibit spike synchronization even if their PO s are only weakly correlated. Here, we investigated the relationship between spike synchronization and suppressive modulation derived from classical receptive‐field surround (surround suppression). We found that layer 4 and layer 2/3 pairs exhibited mainly asymmetric spike synchronization that had non‐zero time‐lags and was dependent on both the similarity of the PO and the strength of surround suppression. In contrast, layer 2/3 and layer 2/3 pairs showed mainly symmetric spike synchronization that had zero time‐lag and was dependent on the similarity of the strength of surround suppression but not on the similarity in PO s. From these results, we propose that in cat V 1 there exists a functional network that mainly depends on the similarity in surround suppression, and that in layer 2/3 neurons the network maintains surround suppression that is primarily inherited from layer 4 neurons.