Neuroengineering Exam 1: Neurophysiology and Synaptic Transmission
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Questions and Answers

The firing rate of a neuron in the primary visual cortex can be used to infer the retinal disparity angle when the firing rate is equal to 0.

False

Extracellular measures can capture the E/IPSPs that occur over the dendrites.

False

The part of the pyramidal neuron that acts as a current dipole is the dendritic tree.

True

Intracellular recordings are used to measure the sequence of APs.

<p>False</p> Signup and view all the answers

The tuning curve in the figure shows the firing rate of a neuron as a function of the retinal disparity angle.

<p>True</p> Signup and view all the answers

An IPSP consists of a depolarization of the postsynaptic cell membrane.

<p>False</p> Signup and view all the answers

The firing rate of the pre-synaptic neuron influences the temporal summation of the PSPs in the post-synaptic cell.

<p>True</p> Signup and view all the answers

The frontal lobe houses the primary visual function.

<p>False</p> Signup and view all the answers

In the brain primary motor cortex, the extension of the cortical region which controls a specific body region is proportional to that body region's volume.

<p>False</p> Signup and view all the answers

The short-term synaptic plasticity involves an irreversible change in the post-synaptic membrane.

<p>False</p> Signup and view all the answers

The EEG signal is mainly generated by action potentials.

<p>False</p> Signup and view all the answers

The neuron in the figure responds mainly to negative s.

<p>False</p> Signup and view all the answers

If the neuron firing rate is equal to 0 Hz, we can exactly infer which retinal disparity produced that response.

<p>True</p> Signup and view all the answers

The discriminability d’ is higher for higher values of the coherence level.

<p>False</p> Signup and view all the answers

The Granger Test is less suitable than the Ordinary Coherence to obtain a spectral measure.

<p>False</p> Signup and view all the answers

Regular networks have a larger Global Efficiency than random networks.

<p>False</p> Signup and view all the answers

A negative value of Gx->y indicates a causal precedence of x over y.

<p>False</p> Signup and view all the answers

The frequency of oscillation of the beta rhythm is around 10 Hz.

<p>False</p> Signup and view all the answers

The mu rhythm is generated in the central regions of the cerebral cortex.

<p>True</p> Signup and view all the answers

Impedance is a measure of the ability of an experimental subject to carry on an experiment.

<p>False</p> Signup and view all the answers

The contact impedances of a pair of electrodes should be large compared to the input impedance of the differential amplifier connected to them.

<p>False</p> Signup and view all the answers

The eye is more negative in its frontal part than its posterior part.

<p>False</p> Signup and view all the answers

Notch filters reject the entire signal, including the useful signal, to remove powerline noise.

<p>False</p> Signup and view all the answers

Quantization divides the input range of the ADC into exactly 2^NBITS intervals, where NBITS is the number of bits of the ADC.

<p>False</p> Signup and view all the answers

Applying a high-pass digital filter can prevent saturation.

<p>False</p> Signup and view all the answers

The Average Rectified Value (ARV) is a measure of the amplitude of a signal.

<p>True</p> Signup and view all the answers

The frequency spectrum of white noise is flat.

<p>True</p> Signup and view all the answers

The Central Limit Theorem (CLT) states that the average of N independent identically distributed signals approaches zero for N → ∞.

<p>False</p> Signup and view all the answers

The variance of the average of 100 independent and identically distributed random variables with variance equal to 4 is 0.2.

<p>False</p> Signup and view all the answers

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