Figure 8: Competitive group dynamics in subthreshold potentials are eliminated by spike blocking.
From: Spontaneous emergence of fast attractor dynamics in a model of developing primary visual cortex
Top panel (a–d): same information as in Fig. 5, but using the average subthreshold potential of each cell, rather than the total number of spikes, for each presentation. Cell potentials exhibit similar competitive, all-or-nothing behaviour as spikes (Fig. 5) in response to mixed stimuli (d). (e–h, bottom) Same settings, but after blocking spiking activity in all neurons. Competitive dynamics are essentially eliminated, giving way to smooth, gradual transition between response patterns. Thus, competitive group dynamics in the model are due to lateral influences between neurons, which might be tested physiologically.
