PlexBright Infrared LED Modules

Plexon’s newsletter from July 25, 2013 that discusses the 2013 Hong Kong Regional workshop as well as the new PlexBright LED product.



July 25, 2013

Huge Turnout for China Regional Workshop

Hong Kong Plexon just finished hosting its remarkably successful 2013 Regional Workshop held at the Peking University Health Science Center in Beijing. Nearly 80 attendees represented almost 40 labs! The workshop offered three full days of instruction including expert training with OmniPlex®, CinePlex®, PlexBright, Offline Sorter, NeuroExplorer®, electrodes and animal surgery. Attendees were honored to hear from special guest speakers Dr. Wu Xujun and Dr. Xu Kedi who kindly shared a wealth of guidance and experience on topics including optogenetics. Attendees enjoyed lecture style presentations followed by hands-on application.

Congratulations to Hong Kong Plexon and thank you to all researchers who participated! This is the largest and most successful China Regional Workshop to date!

Hong Kong Plexon is Plexon Inc’s partner in China and Korea. For more information regarding product sales or future workshops in China, contact

New PlexBright™ Infrared LED Modules

Plexon is also pleased to announce the release of two new infrared (850nm and 940nm) wavelengths in our line of PlexBright™ LED Modules. Like other PlexBright LED Modules, these new infrared modules deliver levels of fiber-coupled light dramatically higher than of competitor fiber-coupled LEDs. Both infrared wavelengths are available in either the Table-top or Compact LED Module form factor.

It is important to note that when characterizing LED module output intensities, Plexon provides the most relevant specifications for optogenetics research: the amount of continuous light power delivered to tissue, rather than the full output intensity of the module.

For more information, or to review specific light output tables, download the PlexBright Optogenetic Stimulation System Guide, or email

PlexBright Dual LED Commutator Now with Magnetic Attachments

Earlier this year, Plexon launched the light-weight PlexBright Dual LED Commutator that supports up to two, uniquely engineered, compact, high-intensity LED modules. We appreciate the great wave of interest so quickly and, more importantly, the feedback from researchers’ experiences covering a wide variety of experimental set-ups. We not only confirmed that the PlexBright Dual LED Commutator functioned extremely well; but, we also gained important insight regarding improving the “interchangeability” of the Compact LED Modules.

Introducing the PlexBright Dual LED Commutator with a magnetic interface between the commutator and the LED modules! Often, a PlexBright Dual LED Commutator is fixed inside a cage or an animal environment. The new magnetic connection makes exchanging LED modules much faster and easier.

For more information, download the PlexBright Optogenetic Stimulation System Guide, or email

Research Spotlight

Let us know about your 2013 publication citing Plexon and our equipment and we will send you a thank you award with a mug and a T-shirt! Send notices, address and T-shirt size to

All articles listed are alphabetical based on first author within two categories: articles published online in electronic-only journals or ahead of print, and articles published in full print.

Recent articles published online in electronic-only journals or ahead of print:

  • Akrouh, Alejandro, and Daniel Kerschensteiner. “Intersecting Circuits Generate Precisely Patterned Retinal Waves.” Neuron (2013).
  • Anderson, Emily B., Jude F. Mitchell, and John H. Reynolds. “Attention-dependent reductions in burstiness and action-potential height in macaque area V4.” Nature Neuroscience (2013).
  • Arce, Fritzie I., J-C. Lee, Callum F. Ross, Barry J. Sessle, and Nicholas G. Hatsopoulos. “Directional information from neuronal ensembles in the primate orofacial sensorimotor cortex.” Journal of Neurophysiology (2013).
  • Brigman, Jonathan L., Rachel A. Daut, Tara Wright, Ozge Gunduz-Cinar, Carolyn Graybeal, Margaret I. Davis, Zhihong Jiang et al. “GluN2B in corticostriatal circuits governs choice learning and choice shifting.” Nature Neuroscience (2013).
  • Burton, Amanda C., Gregory B. Bissonette, Nina T. Lichtenberg, Vadim Kashtelyan, and Matthew R. Roesch. “Ventral Striatum Lesions Enhance Stimulus and Response Encoding in Dorsal Striatum.” Biological Psychiatry (2013).
  • Dickey, Adam S., Yali Amit, and Nicholas G. Hatsopoulos. “Heterogeneous neural coding of corrective movements in motor cortex.” Frontiers in Neural Circuits 7 (2013).
  • Donzis, E. J., R. L. Rennaker, and L. T. Thompson. “Fear conditioning alters neuron-specific hippocampal place field stability via the basolateral amygdala.” Brain Research (2013).
  • Horst, Nicole K., and Mark Laubach. “Reward-related activity in the medial prefrontal cortex is driven by consumption.” Frontiers in Neuroscience 7 (2013).
  • Khawaja, Farhan A., Liu Dave Liu, and Christopher C. Pack. “Responses of MST neurons to plaid stimuli.” Journal of Neurophysiology (2013).
  • Kirkby, Lowry A., and Marla B. Feller. “Intrinsically photosensitive ganglion cells contribute to plasticity in retinal wave circuits.” Proceedings of the National Academy of Sciences (2013).
  • Lardeux, Sylvie, Dany Paleressompoulle, Rémy Pernaud, Martine Cador, and Christelle Baunez. “Different populations of subthalamic neurons encode cocaine versus sucrose reward and predict future error.” Journal of Neurophysiology (2013).
  • Niedringhaus, Mark, Xin Chen, Katherine Conant, and Rhonda Dzakpasu. “Synaptic potentiation facilitates memory-like attractor dynamics in cultured in vitro hippocampal networks.” PLOS ONE 8, no. 3 (2013): e57144.
  • Pagan, Marino, Luke S. Urban, Margot P. Wohl, and Nicole C. Rust. “Signals in inferotemporal and perirhinal cortex suggest an untangling of visual target information.” Nature Neuroscience (2013).
  • Philip, Benjamin A., Naveen Rao, and John P. Donoghue. “Simultaneous reconstruction of continuous hand movements from primary motor and posterior parietal cortex.” Experimental Brain Research (2013): 1-15.
  • Rangel, Lara M., Laleh K. Quinn, Andrea A. Chiba, Fred H. Gage, and James B. Aimone. “A hypothesis for temporal coding of young and mature granule cells.” Frontiers in Neuroscience 7 (2013).
  • Riehle, Alexa, Sarah Wirtssohn, Sonja Grün, and Thomas Brochier. “Mapping the spatio-temporal structure of motor cortical LFP and spiking activities during reach-to-grasp movements.” Frontiers in Neural Circuits 7 (2013).
  • Shao, Pei-Chiang, Wan-Ting Tseng, Chung-Chih Kuo, Wei-Chang Shann, Meng-Li Tsai, and Chien-Chang Yen. “Effects of spike sorting error on the Granger causality index.” Neural Networks (2013).
  • Smith, Kyle S., and Ann M. Graybiel. “A Dual Operator View of Habitual Behavior Reflecting Cortical and Striatal Dynamics.” Neuron (2013).
  • Soma, Shogo, Satoshi Shimegi, Naofumi Suematsu, Hiroshi Tamura, and Hiromichi Sato. “Modulation-Specific and Laminar-Dependent Effects of Acetylcholine on Visual Responses in the Rat Primary Visual Cortex.” PLOS ONE 8, no. 7 (2013): e68430.
  • Steinschneider, Mitchell, Kirill V. Nourski, and Yonatan I. Fishman. “Representation of speech in human auditory cortex: Is it special?.” Hearing Research (2013).
  • Tsien, Joe Z., Meng Li, Remus Osan, Guifen Chen, Longian Lin, Phillip Lei Wang, Sabine Frey et al. “On Initial Brain Activity Mapping of Associative Memory Code in the Hippocampus.” Neurobiology of Learning and Memory (2013).
  • Wu, Junfang, Charles Raver, Chunshu Piao, Asaf Keller, and Alan I. Faden. “Cell Cycle Activation Contributes to Increased Neuronal Activity in the Posterior Thalamic Nucleus and Associated Chronic Hyperesthesia after Rat Spinal Cord Contusion.” Neurotherapeutics (2013): 1-19.
  • Wu, Wei, and Anuj Srivastava. “Estimating summary statistics in the spike-train space.” Journal of Computational Neuroscience (2013): 1-20.
  • Xiao, Lei, Mingsha Zhang, Dajun Xing, Pei-Ji Liang, and Si Wu. “Shifted encoding strategy in retinal luminance adaptation: from firing rate to neural correlation.” Journal of Neurophysiology (2013).
  • Yang, Pai-Feng, You-Yin Chen, Der-Yow Chen, James W. Hu, Jyh-Horng Chen, and Chen-Tung Yen. “Comparison of fMRI BOLD Response Patterns by Electrical Stimulation of the Ventroposterior Complex and Medial Thalamus of the Rat.” PLOS ONE 8, no. 6 (2013): e66821.
  • Yu, Huaiqiang, Nenggan Zheng, Wei Wang, Shuo Wang, Xiaoxiang Zheng, and Zhihong Li. “Electroplated Nickel Multielectrode Microprobes With Flexible Parylene Cable for Neural Recording and Stimulation.” Journal of Microelectromechanical Systems: volume PP, no. 99 (2013): 1-1.

Recent articles published in full print:

  • Dangi, Siddharth, Amy L. Orsborn, Helene G. Moorman, and Jose M. Carmena. “Design and analysis of closed-loop decoder adaptation algorithms for brain-machine interfaces.” Neural Computation 25, no. 7 (2013): 1693-1731.
  • Fishman, Yonatan I., Christophe Micheyl, and Mitchell Steinschneider. “Neural Representation of Harmonic Complex Tones in Primary Auditory Cortex of the Awake Monkey.” The Journal of Neuroscience 33, no. 25 (2013): 10312-10323.
  • Hohl, Sonja S., Kris S. Chaisanguanthum, and Stephen G. Lisberger. “Sensory Population Decoding for Visually Guided Movements.” Neuron 79, no. 1 (2013): 167-179.
  • Hyman, James M., Jennifer Whitman, Eldon Emberly, Todd S. Woodward, and Jeremy K. Seamans. “Action and outcome activity state patterns in the anterior cingulate cortex.” Cerebral Cortex 23, no. 6 (2013): 1257-1268.
  • Lehmann, Sebastian J., and Hansjörg Scherberger. “Reach and Gaze Representations in Macaque Parietal and Premotor Grasp Areas.” The Journal of Neuroscience 33, no. 16 (2013): 7038-7049.
  • McKenzie, Sam, Nick TM Robinson, Lauren Herrera, Jordana C. Churchill, and Howard Eichenbaum. “Learning Causes Reorganization of Neuronal Firing Patterns to Represent Related Experiences within a Hippocampal Schema.” The Journal of Neuroscience 33, no. 25 (2013): 10243-10256.
  • Tao, Ye, Tao Chen, Bei Liu, Jun Hui Xue, Lei Zhang, Feng Xia, Ji-jing Pang, and Zuo Ming Zhang. “Visual signal pathway reorganization in the Cacna1f mutant rat model.” Investigative Ophthalmology & Visual Science 54, no. 3 (2013): 1988-1997.


1st JoVE Publication Contest Update

Winners Jonathan Ho and his colleagues in Rebecca Burwell’s Behavioral Neuroscience of Memory and Attention Lab at Brown University have finalized their manuscript with JoVE and are working on the methods video script. If all continues on schedule, the article and accompanying methods video will be made available online by Neuroscience 2013.

Offline Sorter™ Promotion

Get in on our 30th Anniversary specials for Offline Sorter (OFS) version 3! When you purchase OFS v3, choose either a special pricing (~$1,000 savings) or an extra license ($2,000+ savings). Email to request a quote or place an order. This promotion expires December 20, 2013.

Innovation for the Next 30 Years

Plexon continues to celebrate its 30th year serving researchers around the globe!


PLEXON®, the five-line symbol, CinePlex®, DigiAmp™, Offline Sorter™, OmniPlex® and PlexBright™ are registered and unregistered trademarks of Plexon Inc,
Dallas, Texas, USA. ©2012 Plexon Inc. Other product and company names mentioned are trademarks or registered trademarks of their respective owners.