NEUR 2035 Final - Lab 5 Flashcards
(23 cards)
If you conduct a T-test with two sets of data and obtain a p-value of 0.004, are these two sets of data significantly different?
Yes, because the p-value is smaller than 0.05
True or false:
When the reference end of a voltmeter is outside the cell, the resting membrane potential is negative. If we instead placed the reference inside the cell, the voltmeter would show a positive resting membrane potential.
True
True or false:
In Excel, you can double click a calculated result (the number) to see which function (or formula) and which group of data were used to calculate the result.
True
True or false:
Crickets have their nerve cord on the ventral side (different from us, our spinal cord is on dorsal side). It is easier to connect the electrodes to the nerve cord when the cricket exposes its ventral side.
True
True or false:
In this lab, we will poke the ovipositor to stimulate the cricket.
False
True or false:
We will use a power lab (the grey box) to measure voltage changes in cricket nerves.
True
Which statement is not correct?
A. All agonistic neuromodulators are excitatory
B. Non-competitive neuromodulators can still produce an effect even if all neurotransmitter binding sites are occupied
C. An agonist neuromodulator will facilitate the effect of its neurotransmitter
D. Ionotropic receptors elicit a faster response than metabotropic receptors
A
True or false:
When recording local field potentials, the recorded amplitude will increase if more neurons are fired because the recorded amplitude is the sum of each neuron’s amplitude.
True
A 100 unit insulin syringe can hold 1 mL of liquid. If you need to load 100 μL of solution, which mark should you load the solution to?
10 unit
True or false:
Glutamate can cause excitotoxicity in humans. Nicotine can cause excitotoxicity in insects if the insect has the right kind of receptor.
True
True or false:
Conventional current flows from positive to negative, but electrons flow from negative to positive.
True
True or false:
If we place the red end (measuring end) of multi-meter (used as voltmeter here) in the “ground” and black end (reference end) in the “hot” part of the wall socket, we will receive a negative number.
True
True or false:
If the voltmeter shows a negative reading, this means that the reference end (usually the black end) is connected to an area that has more positive charge than the measuring end.
True
True or false:
In humans, the autonomic nervous system is equivalent to the neurons that fire spontaneously in the cricket. We cannot turn them off (unless we are dead), but their activity can increase or decrease.
True
What would happen if we set the sampling rate at 10/s instead of 10k/s?
We would miss a lot of neuron activity in our recording
True or false:
We should use the same cricket to test all the drugs because it will save a lot of money.
False
True or false:
The numbers collected are average amplitudes of the recorded line during the time that we highlighted on the graph.
True
If we include a lot of flat portion in our stimulus averages, the software will give ____ reading than the true value.
Smaller
Why don’t we include all peaks as a stimulus evoked firing?
If there is no comment indicating the peak came from an intentional stimulus, it could be from an environmental stimulus instead
True or false:
Non-stimulus-evoked spikes could be from wind/sound/other factors that stimulated the cricked, so they should not be collected with spontaneous firing signals.
True
True or false:
For each solution, we record 6 spontaneous firing signals and 6 stimulus evoked firings before injecting the drug.
False
True or false:
The “dragging” method will speed up your calculations compared to manually writing the formulas or using a calculator.
True
True or false:
Based on our experimental results, ethanol can be either excitatory or inhibitory in the cricket depending on the ethanol concentration.
True
