Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Computational Neuroscience 1 > Intro/Leaky Integrate model > Flashcards

Intro/Leaky Integrate model Flashcards

1
Q

what is an r-circuit?

A

a circuit made up of a battery and resistor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the unit of resistance?

A

Ohms Ω

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the letter representation of resistance?

A

R

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the unit of current?

A

Amperes A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is the letter representation of current?

A

I

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the unit of voltage/potential difference?

A

Volts V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the letter representation of voltage?

A

V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is a resistor?

A

anything that resists the flow of current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is Ohm’s law?

A

Voltage= current x resistance (V=IR)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

define voltage

A

energy required to move charge through an electrical field

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the relationship between resistance and current?

A

inverse

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

how is current conventionally defined?

A

as the flow of positive charge (absence of electrons)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

in what direction does current flow?

A

from higher to lower potential

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

show an equation integrating ohms law with current flowing from higher to lower potential

A

I= (V1-V2)/R

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is the equation to calculate the total resistance in resistors in series?

A

Req= R1 + R2 + R3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

why is the calculation of resistance of resistors in parallel calculated by adding together resistance?

A

because the current must pass through all resistors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

how does a resistor affect voltage

A

reduces the voltage travelling through

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

if several batteries are orientated in the same direction, what is the total voltage?

A

the sum of the batteries added together

19
Q

if 2 x 1.5 volt batteries are in series, what is the total voltage?

A

3 v

20
Q

what is the equation to calculate the total resistance of resistors in parallel?

A

1/Req= 1/R1 + 1/R2 + 1/R3

21
Q

what is Kircchoff’s law of current?

A

the sum of all current at a node is zero- the currents that enter a circuit/junction are equal to the currents that leave
∑In = 0

22
Q

What is Kircchoff’s law of voltage?

A

the sum of voltage differences within a closed circuit is zero

23
Q

what is an RC- Circuit?

A

resistor- capacitor circuit

24
Q

what is the letter representing Capacitance?

A

C

25
Q

what is the unit of capacitance?

A

Farad (F)

26
Q

what is the letter representing charge?

A

Q

27
Q

what is the unit of charge?

A

Coloumb (C)

28
Q

what is the capacitor formula?

A

Charge= capacitance x voltage (Q=CV)

29
Q

what is a capacitor?

A

2 sheets of metal close together, but not touching with an insultor between, storing electrical charge- positive on one side and negative on the other

30
Q

what does it mean when a capacitor has higher capacitance?

A

greater potential difference between either side of capacitor

31
Q

what is capacitance?

A

the ability for a capacitor to hold onto charge

32
Q

what is current a function of?

A

time

33
Q

what does d represent in equation?

A

the derivative- the varying rate of a change of function with respect to an independent variable- a single point on a non-linear curve

34
Q

in Q=CV which components are and aren’t functions of time?

A

Q and V are functions of time
C- is not- it is a fixed unit

35
Q

what is happening in an RC- circuit when the switch is open?

A

there is no current flowing through the capacitor, just an electron build up, however, they cannot travel to the other side without voltage

36
Q

what is happening in an RC- circuit when the switch is closed?

A

electrons begin to be pulled from one side of the capacitor to the other, charging up the capacitor until eventually the amount of charge on the capacitor matches that of the battery

37
Q

what is the equation for current when the switch is open on an RC circuit?

A

Io = Vo/ R

38
Q

what is the equation for current when the switch is closed on an RC circuit?

A

I(t) = Vo/R x e -t/tau

39
Q

does current across the resistor = current across the capacitor?

A

yes

40
Q

describe how the membrane of a neuron acts as an electrical circuit

A

the lipid bilayer acts as a capacitor- with charge either side and a insulating lipid layer
the ion channels act as resistors which current of ions can come through with resistance
the battery is the maintenance of potential done by pumps just as Na+/K+ pump to maintain resting potential

41
Q

What is Vm?

A

membrane potential

42
Q

what is Rm?

A

membrane resistance

43
Q

what is Cm?

A

membrane capacitance

44
Q

what is Er?

A

resting potential

Computational Neuroscience 1 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions