1. What is global stability?
a) when both synaptic & activation dynamics are simultaneously used & are in equilibrium
b) when only synaptic & activation dynamics are used
c) when only synaptic dynamics in equilibrium
d) none of the mentioned
Explanation: Global stability means neuron as a whole is stable
2. Which models belongs to main subcategory of activation models?
a) additive & subtractive activation models
b) additive & shunting activation models
c) subtractive & shunting activation models
d) all of the mentioned
Explanation: Additive & shunting activation models are the most basic category of activation models.
3. .What is the assumption of perkels model, if f(x) is the output function in additive activation model?
a) f(x)=x
b) f(x)=x2
c) f(x)=x3
d) none of the mentioned
Explanation: Perkels model assumes output function to be linear.
4. Who proposed the shunting activation model?
a) rosenblatt
b) hopfield
c) perkel
d) grossberg
Explanation: Grossberg proposed the model in 1982
5.What was the goal of shunting activation model?
a) to make system dynamic
b) to keep operating range of activation value to a specified range
c) to make system static
d) can be either for dynamic or static, depending on inputs
Explanation: Stabilizing & bounding the unbounded range of activation value was the primary goal of this model
6. Activation models are?
a) dynamic
b) static
c) deterministic
d) none of the mentioned
Explanation: Input/output patterns & the activation values may be considered as sample functions of random process.
7. If xb(t) represents differentiation of state x(t), then a stochastic model can be represented by?
a) xb(t)=deterministic model
b) xb(t)=deterministic model + noise component
c) xb(t)=deterministic model*noise component
d) none of the mentioned’
Explanation: Noise is assumed to be additive in nature in stochastic models.
8. What is equilibrium in neural systems?
a) deviation in present state, when small perturbations occur
b) settlement of network, when small perturbations occur
c) change in state, when small perturbations occur
d) none of the mentioned
Explanation: Follows from basic definition of equilibrium
9. What is the condition in Stochastic models, if xb(t) represents differentiation of state x(t)?
a) xb(t)=0
b) xb(t)=1
c) xb(t)=n(t), where n is noise component
d) xb(t)=n(t)+1
Explanation: xb(t)=0 is condition for deterministic models, so option c is radical choice.
10. What is asynchronous update in a network?
a) update to all units is done at the same time
b) change in state of any one unit drive the whole network
c) change in state of any number of units drive the whole network
d) none of the mentioned
Explanation: In asynchronous update, change in state of any one unit drive the whole network.