Amplification
Modes
At
the heart of the NeuroLog system range are the many possible
amplification modules, which can be used to make
intracellular or extracellular microelectrode recordings;
multi-channel EMG, EEG or ECG recordings or recordings from
strain gauges or pressure transducers. |
 |
Extracellular
AC recording system with spike
discrimination and audio monitoring.
Modules Used: NL100AK,
NL104A, NL106,
NL125, NL201,
NL120S, NL985S |
|
The NL100RK -
Record from and then electrically lesion your recording site
without moving or disconnecting the electrode.
Modules
Used: NL100RK,
NL104A |
|
How
to avoid
ground loops when recording from multiple NL100AK AC
preamplifier headstages.
Modules Used: NL100AK
(x2 or more) |
|
A
typical intracellular (DC) recording configuration.
Modules Used: NL102G,
NL412,
NL125, NL106,
NL304,
NL405
(x2) |
|
4-Channel
isolated amplifier system with filtering and signal
conditioning.
Modules Used: NL844,
NL820A, NL135,
NL144, NL530 |
|
Measurement
of physiological pressures with the NeuroLog System
Modules Used: NL108A
Other items: NL108T2,
NL108T4, NL108L2, NL108L4, NL108D4 |
Triggering
& Pulse Generation
Here
are just some ways that NeuroLog modules can be utilized to
produce complex pulse protocols with full control over the
timing characteristics. These pulses can be used to
trigger other equipment, including electrical stimulators.
Other pulse generation protocols featuring stimulation are
given in the Electrical Stimulation Section. |
|
Triggering a stimulator at a set time after a set
number of pulses within a burst.
Modules Used: NL304,
NL405
(x2), NL301,
NL603 |
|
A set number of bursts
of pulses with control of
burst duration/repetition & output frequency/width.
Modules Used: NL603
(x2), NL304,
NL405,
NL301 |
|
A regular burst of pulses with control of burst
duration/repetition and output frequency/width.
Modules Used: NL304,
NL405, NL301 |
|
Triggering a stimulator a set time after EMG
activity.
Modules Used: NL703,
NL201,
NL405 |
|
A
versatile stimulus timing protocol: Set number of
trains; set number of bursts in a train and set number of
pulses in a burst.
Modules Used: NL603
(x4), NL304
(x2), NL301,
NL405 |
|
A
regular burst of pulses with control over burst frequency,
pulses/burst, pulse width & frequency.
Modules
Used: NL301,
NL304,
NL603, NL405 |
Signal
Conditioning Filtering & Processing
Single
& multi-channel filters and signal conditioning units
can be used to remove unwanted components/frequencies from
biological signals prior to acquisition. In addition,
some of the NeuroLog modules can be used to carry out simple
processing tasks. |
|
Connection
of four NL125/6 filters between NL820A Isolator and NL530
Conditioner.
Modules Used: NL820A,
NL125
(x4), NL530 |
|
Using an analogue output to monitor the
instantaneous interval between an irregular series of input
pulses.
Modules
Used:
NL304,
NL601 |
Electrical
Stimulation
The
NeuroLog System includes a battery powered constant current
stimulus isolator (NL800) which can be controlled by various
modules within the range. In addition, the output
pulses produced by the NeuroLog System can be used to
trigger most laboratory stimulators. |
|
Some
examples of simple stimulator circuits.
Modules Used: NL800,
NL510, NL512,
NL405, NL301,
NL304 |
|
Using
a single trigger pulse to produce two bursts of stimuli from
two stimulators with a variable delay between the bursts.
Modules Used: NL405
(x3), NL301
(x2) |
|
Simple
bi-phasic pulse generation of a defined duration burst.
Modules
Used: NL301, NL405
(x2), NL506,
NL510,
NL800 (x2)
|
|
Using a biphasic analogue waveform to generate an
isolated biphasic voltage output from two NL800 constant
current stimulus isolators.
Modules
Used:
NL512, NL800
(x2) |
|
Using the NL405 Delay/Width Module & NL501Logic Gate to produce pairs of pulses with interval
control from a single trigger input, such as the NL301Pulse Generator.
Modules
Used:
NL301, NL405,
NL501 |
