The absence of dense-core plaques was not surprising given the absence of Aβ42 accumulation.
47 WTA networks can model arbitrary state machines, 48 states can remain in the absence of input, and state transitions can be triggered by external input given the current state.
What knits together the initial accounts highlighted above is the absence of input from the students who were actually at the Lincoln Memorial for the event.
Finally note that Eq. (4), in the absence of inputs, gives (13) f f (x, p, u t, t ) = f f (x, p, 0, t ) = (1) = S s r s (x, p ) + S f r f (x f, p ) (2) ≈ S f r f (x f, p ) ≈ 0 (3) since the term S fr f (x f, p) dominates the term S sr s x, p).
In this sense, the flow of neural activities in the absence of inputs "prepares" for the target output pattern to be stabilized by the inputs.
Hence, neural activity dynamics cannot be determined accurately in the absence of inputs since the initial values for neural activity are chosen on the basis of the inputs.
Neither neural activities observed in the absence of inputs nor changes caused in the neural activity when an input is provided were studied extensively in the past.
The main source for this sort of noise is probably at the level of synaptic transmission[45], since neurons stimulated directly by current injection in the absence of synaptic input give highly stereotyped and precise responses[46].
Without loss of generality, suppose that the fixed point in the absence of external input is given by (widehat {u}_{1}>0) and (widehat {u}_{2}<0).
The use of 2,968 expression profiles for input vector encoding gives the same number of input variables.
In our theoretical framework, an output for a given input is represented by an attractor of the neural dynamics in the presence of the input; this attractor may differ from that in the absence of the input.
