19 Jan
2024
19 Jan
'24
10:59 a.m.
Hi,
We recently discovered that multimeter returns membrane potential in some unordered way so
if we want to record the last state of a group of neurons and then to continue simulation
from exactly the same state we were unable to reconstruct it properly.
Is there a way to record the membrane potential together with neuron ID?
Best,Petia Koprinkova-Hristova
29 Jan
29 Jan
2:46 p.m.
Hello Petia,
I am not quite sure if I understand your problem. The voltmeter records time, sender and
voltage for each data point. In the following example, it records the voltage of two
neurons. Then
voltmeter.get('events')
returns
{'senders': array([1, 2, 1, ..., 2, 1, 2]),
'times': array([ 1., 1., 2., ..., 998., 999., 999.]),
'V_m': array([-68.56875477, -70. , -67.27371053, ..., -69.89028023,
-57.39686729, -69.90055242])}
Entries in the senders, times and V_m arrays correspond to each other, so you can group
data by sender.
Also when recording to file, sender information is recorded:
# NEST version: 3.5
# RecordingBackendASCII version: 2
sender time_ms V_m
1 1.000 -68.569
2 1.000 -70.000
1 2.000 -67.274
2 2.000 -70.000
Best,
Hans Ekkehard
3:01 p.m.
Thank you Hans!
Actually we used multimeter. In NEST documentation exact information about voltmeter is
missing or we did not discovered it.
Best,Petia
On Monday, January 29, 2024 at 03:47:00 PM GMT+2, Hans Ekkehard Plesser
<hans.ekkehard.plesser(a)nmbu.no> wrote:
Hello Petia,
I am not quite sure if I understand your problem. The voltmeter records time, sender and
voltage for each data point. In the following example, it records the voltage of two
neurons. Then
voltmeter.get('events')
returns
{'senders': array([1, 2, 1, ..., 2, 1, 2]),
'times': array([ 1., 1., 2., ..., 998., 999., 999.]),
'V_m': array([-68.56875477, -70. , -67.27371053, ..., -69.89028023,
-57.39686729, -69.90055242])}
Entries in the senders, times and V_m arrays correspond to each other, so you can group
data by sender.
Also when recording to file, sender information is recorded:
# NEST version: 3.5
# RecordingBackendASCII version: 2
sender time_ms V_m
1 1.000 -68.569
2 1.000 -70.000
1 2.000 -67.274
2 2.000 -70.000
Best,
Hans Ekkehard
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NEST Users mailing list -- users(a)nest-simulator.org
To unsubscribe send an email to users-leave(a)nest-simulator.org
31 Jan
31 Jan
1:43 p.m.
Hi Petia,
just for your information, the 'voltmeter' is just a pre-configured
'multimeter' that is set to record the voltage. It's only briefly
mentioned in themulitmeter documentation
<https://nest-simulator.readthedocs.io/en/stable/models/multimeter.html>.
cheers,
Jessica
On 29.01.24 15:01, Petia Koprinkova wrote:
Thank you Hans!
Actually we used multimeter. In NEST documentation exact information
about voltmeter is missing or we did not discovered it.
Best,
Petia
On Monday, January 29, 2024 at 03:47:00 PM GMT+2, Hans Ekkehard
Plesser <hans.ekkehard.plesser(a)nmbu.no> wrote:
Hello Petia,
I am not quite sure if I understand your problem. The voltmeter
records time, sender and voltage for each data point. In the following
example, it records the voltage of two neurons. Then
voltmeter.get('events')
returns
{'senders': array([1, 2, 1, ..., 2, 1, 2]),
'times': array([ 1., 1., 2., ..., 998., 999., 999.]),
'V_m': array([-68.56875477, -70. , -67.27371053, ..., -69.89028023,
-57.39686729, -69.90055242])}
Entries in the senders, times and V_m arrays correspond to each other,
so you can group data by sender.
Also when recording to file, sender information is recorded:
# NEST version: 3.5
# RecordingBackendASCII version: 2
sender time_ms V_m
1 1.000 -68.569
2 1.000 -70.000
1 2.000 -67.274
2 2.000 -70.000
Best,
Hans Ekkehard
_______________________________________________
NEST Users mailing list -- users(a)nest-simulator.org
To unsubscribe send an email to users-leave(a)nest-simulator.org
_______________________________________________
NEST Users mailing list --users(a)nest-simulator.org
To unsubscribe send an email tousers-leave(a)nest-simulator.org
--
--------------------------
Dr. Jessica Mitchell (she/her)
Institute of Neuroscience and Medicine (INM-6)
Computational and Systems Neuroscience
Jülich Research Centre
Jülich, Germany
http://www.csn.fz-juelich.de
Email:j.mitchell@fz-juelich.de
Building 15.9 Rm 2001b
Phone: +49 2461 61 85457
1:55 p.m.
Thank you Jessica!Best,Petia
On Wednesday, January 31, 2024 at 02:43:39 PM GMT+2, Jessica Mitchell
<j.mitchell(a)fz-juelich.de> wrote:
Hi Petia,
just for your information, the 'voltmeter' is just a pre-configured
'multimeter' that is set to record the voltage. It's only briefly mentioned in
the mulitmeter documentation.
cheers,
Jessica
On 29.01.24 15:01, Petia Koprinkova wrote:
Thank you Hans!
Actually we used multimeter. In NEST documentation exact information about voltmeter is
missing or we did not discovered it.
Best, Petia
On Monday, January 29, 2024 at 03:47:00 PM GMT+2, Hans Ekkehard Plesser
<hans.ekkehard.plesser(a)nmbu.no> wrote:
Hello Petia,
I am not quite sure if I understand your problem. The voltmeter records time, sender and
voltage for each data point. In the following example, it records the voltage of two
neurons. Then
voltmeter.get('events')
returns
{'senders': array([1, 2, 1, ..., 2, 1, 2]),
'times': array([ 1., 1., 2., ..., 998., 999., 999.]),
'V_m': array([-68.56875477, -70. , -67.27371053, ..., -69.89028023,
-57.39686729, -69.90055242])}
Entries in the senders, times and V_m arrays correspond to each other, so you can group
data by sender.
Also when recording to file, sender information is recorded:
# NEST version: 3.5
# RecordingBackendASCII version: 2
sender time_ms V_m
1 1.000 -68.569
2 1.000 -70.000
1 2.000 -67.274
2 2.000 -70.000
Best,
Hans Ekkehard
_______________________________________________
NEST Users mailing list -- users(a)nest-simulator.org
To unsubscribe send an email to users-leave(a)nest-simulator.org
_______________________________________________NEST Users mailing list --
users(a)nest-simulator.orgTo unsubscribe send an email to users-leave(a)nest-simulator.org --
--------------------------
Dr. Jessica Mitchell (she/her)
Institute of Neuroscience and Medicine (INM-6)
Computational and Systems Neuroscience
Jülich Research Centre
Jülich, Germany
http://www.csn.fz-juelich.de
Email: j.mitchell(a)fz-juelich.de
Building 15.9 Rm 2001b
Phone: +49 2461 61 85457 _______________________________________________
NEST Users mailing list -- users(a)nest-simulator.org
To unsubscribe send an email to users-leave(a)nest-simulator.org
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4 comments
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participants (3)
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Hans Ekkehard Plesser -
Jessica Mitchell -
Petia Koprinkova