Action Potential Data: Latency, Velocity, and Threshold

This assignment presents a comprehensive analysis of action potential data derived from a biological experiment. The data includes measurements of latency (time delay), conduction velocity, and threshold current under varying conditions, such as different electrode positions and stimulus durations. The results are presented in a tabular format, detailing the latency values for proximal and distal electrode placements, conduction velocities, and threshold currents at different time delays. The data covers multiple trials, each identified by initials, providing a comparative view of the action potential characteristics. Additionally, the assignment includes the height of the second action potential and refractory period results. This analysis aims to provide a clear understanding of the factors influencing action potential propagation and generation, making it a valuable resource for students studying neurobiology and related fields. The data is formatted in milliseconds (ms) for latency, meters per second (m/s) for conduction velocity, and milliamperes (mA) for threshold current. The student has contributed this document to Desklib, a platform for study tools.

Latency 1 is negative electrode proximal (next to) the recording electrodes
Latency 2 is negative electrode distal to (away from) the recording electrodes
Initials Latency 1 (negative electrode proximal) [ms
jd em im 0.97
ks mc sd 0.71
kd,pk, vv 0.93
kp,ah,gm 0.6
lp, af, er 0.82
km jr jt 0.91
cm, am, cb 0.88
un, sb, dp 1.26
ay, nn, yc 1.04
ih,ek,hk 0.7
tn, jl,nb 1.15
ab,ml,cg 0.76
ht, rc, rm 0.93
qf, RH, PP 0.42
ac, ep, vl 1.5
SS,JG,AN 1.025
MD GM AC 1.03
DM, CR, LS 1.4
0.8
TJ+AF+SG 1.75
SJ+LF+MCH 0.08
DF, VP, JP 0.5
JT, LD, BM 0.88
SM + OK 1.19
AP, MW, CC 0.24
SBJ, NT JV 0.81
TW, DA, JL 1.7
RDWA 1.1
KA.AL,MG 0.45
HA + MG+RL 1.11
0.13
AK HE CA 0.7
AC, ST, KD 0.9
SC, OB, KM 0.06
JLR, AZ, PK 1.17
TE OG CS 0.49
GV, CW, JH 1.16
BT, MT, GY 2.58
HS, PY,TU 0.35
AH RR SB 0.99
VB+LP+JN+JVK 0.63
KN+NC+DP
AB + EW 2.1
KH, AK, CC, LM, M 1.55

AM, GK, ND 1.23
AO+PM 1.03
SA+MS+PL 0.65
HH + ES + CE 0.94
RB+MN+MB 0.98
CW + CR + DJ 1.12
CW + SM + S 1.5
AR, JC, DJ 0.89
KS, JT, SE 1.9
AD+SR+SA 2.5
TM + PC + KP 1.3
WW AN SM 0.2
HT YB RS 0.48
LH, FB, AB 0.77
YG, JB, FA 0.77
RJ, DC, KT 0.85
A, T, M 0.925
KAZCK 2.3
BT NW ML 1.13
SM MJ DO 0.47
VN, GH, SO 1.04
SL, JM, JL 0.8
CY RG GM 0.88
JM FS KV 1.2
BG, LB, EK 0.49
LS VS CH AB 1.65
JR KM TD 1.38
MM, JD, SD 0.88
TC, AG, AM 1.525
NALCMJ 2.5
PR, ZB, MC 0.8
EW AT JL 4.15
KR,WH,JN 0.65
SK,HK,RL 1.8
MC,AS 1.89
ts kd tc 1.56
NZ YK JB JY 1.55
Latency 1 (negative electrode proximal) [ms]
Latency 2 (negative electrode more distal) [ms]
60
70
80
Conduction Velocity (m/s

1
4
7
10
13
16
19
22
25
28
31
34
37
40
43
46
49
52
55
58
61
0
10
20
30
40
50
60
70
80
Conduction Velocity (m/s
1
5
9
13
17
21
25
29
33
37
41
45
49
53
57
61
65
69
73
77
81
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Latency 1 and 2
Latency 1 (negati
[ms]
Latency 2 (negati
[ms]
Values

ecording electrodes
e recording electrodes
Latency 2 (negative electrode more distal) [ms] Conduction Velocity (m/s)
1.5 16.66
1.12 23.88
1.27 22.58
1.125 11.13
1.13 32.26
1.17 16.26
1.24 20.9
1.67 23.9
1.33 20.96
1.41 17.73
1.48 16.9
1 32.35
1.45 28.34
1.12 18.51
2.18 20
1.37 25.81
1.49 22.8
1 17.1
0.7 31.25
1.22 20.5
0.93 30.3
1.2 28
1.95 15.45
0.81 41.4
0.66 39.9
1.41 18.44
0.85 11.76
1.35 27.27
1.16 14.97
0.55 20.3
1.34 26.12
1.3 20
0.63 23.8
0.08 33.75
1.8 17.09
1.01 20.83
1.34 1.64
1.7 17.24
1.85 9.6
0.82 54.88
1.28 23.44
1.35 20.74
1.5 17.6
1 16.13

0.93 11.7
0.64 39.1
0.75 53
1.48 16.86
1.66 15.3
0.57 25
0.75 16
1.5 23.3
1.11 22.73
2.1 7.14
0.875 21.53
0.9 22.22
1.09 76.04
1.47 19.48
1.5 25.33
1.49 30.59
1.4 17.9
3.5 6.96
1.2 40.83
1.15 36.1
1.77 14.42
1.04 26.92
1.32 18.9
1.35 29.17
1.03 17.1
1.75 9.7
0.69 21.05
0.32 39.77
3.025 3.03
3.2 12.5
0.7 31.25
4.5 15.38
0.6 61.538
1.16 18.33
2.41 21.28
1.11 16.03
0.88 30.68
Latency 1 (negative electrode proximal) [ms]Latency 2 (negative electrode more distal) [ms]
1
0.663165465732942 1
Conduction Velocity (m/s)

19
22
25
28
31
34
37
40
43
46
49
52
55
58
61
64
67
70
73
76
79
82
Conduction Velocity (m/s)
Conduction Velocity (m/s)
33
37
41
45
49
53
57
61
65
69
73
77
81
Latency 1 and 2
Latency 1 (negative electrode proximal)
[ms]
Latency 2 (negative electrode more distal)
[ms]

Refractory Period results
Height of second action potential (in mV)
At 10 msec delay at 5 msec delay at 2 msec delay
- - -
20.47 17.1 0
30.98 36.03 9.85
2.65 0 0
148.25 137 55.75
190.2 171.5 125.8
235 177.2 176.2
186 164 110
19.5 18.2 7.75
7.44 7.35 0
44.7 38.9 42.8
119.5 138.75 96
25.7 10.9 10.3
47.6 46.3 43.7
55.2 54 50.2
17.76 5.1 1.3
5.75 5.5 0
1.888 0.96 0
2.12 1.43 0
7.57 7.25 6.02
26.4 21.5 0
36.2 23.8 3.75
6.45 3.28 0
11.15 10.65 9.4
4.05 0 0
2.55 2.15 0.445
6.42 6.01 0
14.99 4.61 0
3.4 3.1 2.12
5.65 2.97 0
3 1.5 0.3
8.04 6.72 0
23.8 20.88 0
5.01 4.57 1.88
7.22 5.93 0
7.26 5.85 2.29
7.2 7.6 7.2
7.7 0.8 0
1.51 1.44 0.51
12.75 12.1 0
1.26 1.005 0.01
12.23 10.7 4.55

11.4 10 1.3
6.61 4.9 0.33
10.17 8.305 1.105
14 16.9 14.9
11 8.7 0
1.9 1.89 2.15
1.175 1.15 0.3
24 23 0
14.19 9.91 5.39
20.43 14.83 0
6.53 2.41 0
2.24 1.54 0
10.7 8.7 0.5
5.65 3.39 0
- - -
2.88 2.83 3.03
9.8 8.25 1
- - -
0.073 0.053 0
7.13 5.1 0.37
19.3 7.95 2.39
5.02 4.6 1.89
4.39 3.49 0.75
70.75 49.75 63.75
11.55 6.8 0
22.85 15.13 0
17.35 21.45 10.55
11.55 9.65 5.6
5.9 5.2 0
7.3 3.25 0.11
24 6.28 0.6
12.4 5.7 0.82
de more distal) [ms]
100
150
200
250
Refractory Period: Height of Se

79
82
Conduction Velocity (m/s)
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
0
50
100
150
200
1 2 3 4 5 6 7 8 9 10 11 12 1
0
10
20
30
40
50
60
70
80
Refractory Period: Height of Second Action
of 16 items)

Stimulus duration results
Threshold current in mA
at 1 msec delay at 0.01 msec at 0.03 msec 0.1 msec 0.3 msec
- 0.19 0.1 0.05 0.02
0 0.2 0.1 0.05 0.01
1.9 0.9 0.2 0.04 0.02
0 0 0 0
53.5 0.15 0.07 0.04 0.01
58.2 0.07 0.04 0.03 0.01
172.2 0 0 0.07 0.05
110 0 0.1 0.05 0.01
0 0 - - -
0 0.3 0.1 0.03 0.01
3.8
0 0 0 -252 -278
0 1 0.2 0.1 0.05
43.2 0.05 0.05 0.01 0.003
23.1 1 0.3 0.1 0.02
0 1.3 0.5 0.2 0.075
0 0 0 8.2 10.8
0 1 0.8 0.25 0.15
0 0.9 0.3 0.1 0.05
0.019 1 0.2 0.1 0.05
0 1 0.4 0.1 0.05
0 0.6 0.1 0.05 0.02
0 0.6 0.15 0.05 0.04
1.45 1 0.8 0.4 0.3
0 0.05 0.01 0.01 0.01
0 1 0.3 0.2 0.06
0 0.2 0.1 0.04 0.01
0 0.7 0.15 0.04 0.02
0 1 0.5 0.2 0.7
0 0.5 0.05 0.065 0.025
0 1 0.2 0.1 0.05
0 1 0.7 0.2 0.1
0 0.3 0.15 0.05 0.02
0.24 0.5 0.2 0.1 0.04
0 1 0.6 0.2 0.1
0 0.2 0.1 0.05 0.01
0 0.6 0.15 0.05 0.01
0 0.5 0.1 0.05 0.01
0 0.95 0.21 0.1 0.045
0 0.35 0.06 0.025 0.005
0.5 0.02 0.01 0.005
0 0.5 0.075 0.04 0.009
0.5 1 0.8 0.1 0.05

0.7 0.1 0.05 0.02
0.8 0.2 0.1 0.05
0.8 2.5 1 0.2 0.07
0 0.6 0.2 0.1 0.03
0 0.1 0.05 0.03 0.008
12.9 0.3 0.1 0.07 0.04
0 0.4 0.2 0.05 0.005
2.09 0.2 0.05 0.03 0.01
0 0.4 0.15 0.04 0.03
0 0.1 0.04 0.01 0.006
0 0.6 0.2 0.8 0.3
0 0.8 0.16 0.075 0.025
0 0.03 0.05 0.8 0.3
0 2 1 0.2 0.2
0 0.4 0.1 0.035 0.008
0 0.8 0.4 0.18 0.05
- 0.45 0.96 3.39 1.175
0 0.1 0.05
0 1 0.1 0.05 0.02
- 0.1 0.03 0.01 0.003
0 1 0.6 0.15 0.075
1 1 0.2 0.1 0.03
0.31 0
0.24 0.5 0.2 0.1 0.04
0.53 0.6 0.2 0.1 0.05
0 0.3 0.1 0.08 0.02
0
0 1 0.4 0.1 0.04
0.4 0.2 0.05 0.04
19.85 2 0.2 0.03 0.01
0.2 0.5 0.2 0.1 0.04
0 0.5 0.1 0.025 0.04
0 0.2 0.07 0.035 0.008
0 0.1 0.08 0.04 0.025
0 1.4 0.73 0.19 0.075
ractory Period: Height of Second Action Potential
At 10 msec delay
at 5 msec delay
at 2 msec delay
at 1 msec delay

3
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
73
75
77
79
81
At 10 msec delay
at 5 msec delay
at 2 msec delay
at 1 msec delay
7 8 9 10 11 12 13 14 15 16
d: Height of Second Action Potential (Sample
of 16 items)
At 10 msec delay
at 5 msec delay
at 2 msec delay
at 1 msec delay