ICSS Stimulators

PHM-150B
Programmable ICSS Stimulator

PHM-150B/2
Dual Programmable ICSS Stimulator

This constant current square wave stimulator is designed for intracranial self-stimulation, also referred to as ICSS. Both the single and dual programmable ICSS stimulators function in the same way, with the only difference being the dual ICSS stimulator (PHM-150B/2) is made up of two programmable ICSS stimulators (PHM-150B) housed in the same cabinet with independent power supplies. The single channel stimulator (PHM-150B) is used to deliver stimulation to one animal and the dual programmable ICSS stimulator (PHM-150B/2) is used to deliver stimulation to two animals. A total of eight dual programmable ICSS stimulators (PHM-150B/2) may be connected to one computer to deliver stimulation for up to sixteen animals. The maximum current possible is related to the impedance of the electrode. Programmable stimulator parameters include pulse # 1 amplitude and duration, pulse delay duration, pulse # 2 amplitude and duration, frequency and train duration. Connection from the stimulator to the computer requires a separate interface card (DIG-729) be purchased along with necessary cables (SG-219ST and SG-219C-10, all sold separately).

Dimensions:
1.75" W x 5.25" H x 7.25" D
(4.5 cm x 13.3 cm x 18.4 cm)

PHM-152
Programmable ICSS Stimulator with Monitor Output

PHM-152/2
Dual Programmable ICSS Stimulator with Monitor Output

This constant current square wave stimulator is designed for intracranial self-stimulation, also referred to as ICSS. Both the single and dual programmable ICSS stimulators with monitor output function in the same way, with the only difference being the dual ICSS stimulator (PHM-152/2) is made up of two programmable ICSS stimulators with monitor output (PHM-152) housed in the same cabinet with independent power supplies. The single channel stimulator (PHM-152) is used to deliver stimulation to one animal and the dual programmable ICSS stimulator with monitor output (PHM-150B/2) is used to deliver stimulation to two animals. A total of eight dual programmable ICSS stimulators with monitor output (PHM-152/2) may be connected to one computer to deliver stimulation for up to sixteen animals. The maximum current possible is related to the impedance of the electrode. Programmable stimulator parameters include pulse # 1 amplitude and duration, pulse delay duration, pulse # 2 amplitude and duration, frequency and train duration. On the front of both the single and dual stimulators there is a BNC connectors that provides an optically isolated output. Two output sensitivities are provided, 20 uA/V or 10 uA/V. This output may be connected to a conventional or storage oscilloscope or analog to digital converter to validate programmed settings as well as monitor actual subject stimulation. Connection from the stimulator to the computer requires a separate interface card (DIG-729) be purchased along with necessary cables (SG-219ST and SG-219C-10, all sold separately).

Dimensions:
1.75" W x 5.25" H x 7.25" D
(4.5 cm x 13.3 cm x 18.4 cm)

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PHM-155A
BNC Output Cable, 5' (1.5 m)

PHM-155B
BNC Output Cable, 10' (3.0 m)

PHM-155D
BNC Output Cable, 2' (0.6 m)

These cables feature noise free RG-58 coaxial cable with male BNC connectors on each end. They may be used to connect the stimulator sites to the cable (PHM-155C) or to connect the isolated monitor output to an oscilloscope input.

 PHM-155C
BNC Adapter

This BNC to female banana plug socket adapter is used to connect electrode leads with male banana plugs to the cable (PHM-155A or PHM-155B).

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PHY-015-2 
2 Channel Commutator

PHY-015-4
4 Channel Commutator

PHY-015-6
6 Channel Commutator

Commutators, also known as electric swivels or slip rings, are available with 2, 4, and 6 channels. All commutators have an opening through the center to allow tubing from a leash assembly (PHM-120C) to pass through. They are designed to be low current and low voltage devices. These have been tested to levels of 100 V and 0.08 A. All single plug commutators are supplied with a live plug (red) and a dummy plug (white) for even rotation of the rotor. Commutators are low noise and environmentally safe. The mechanism for conducting electrical signals consists of brushes and rings. All commutators have double brushes to assure unbroken continuity, unless a single brush is requested to reduce torque for use with mice. Note, if a single brush version is needed for use with mice, add "SB" to the part number.

Commutator Specifications:

PHM-110P1
Arm Assembly

Similar to the PHM-110 except it has been modified for use with the PHY-015 line of commutators. The arm assembly includes an aluminum block for mounting on most test chambers. Med Associates' chambers with the "CT" extension in the model number (e.g. ENV-008-CT) are pre-drilled for this block or a modular panel is available for most chambers. The adjustable post extends up to 8.0" (20.3 cm) above and 7.0" (17.8 cm) over the center of the chamber with a pivot arm and dual action gimbals. An adjustable counter balance weight maintains sufficient tension to keep the leash assembly away from the test animal.

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