Encoding taste and place in the hippocampus

The ambience of a good meal can sometimes be as memorable as the taste of the food itself. A new study from Shantanu Jadhav and Donald Katz’s labs, published in the February 18 edition of The Journal of Neuroscience, may help explain why. This research identified a subset of neurons in the hippocampus of rats that respond to both places and tastes.

The hippocampus is a brain region that has long been implicated in learning and memory, especially in the spatial domain. Neurons in this area called “place cells” respond to specific locations as animals explore their environments. The hippocampus is also connected to the taste system and active during taste learning. However, little is known about taste processing in the hippocampus. Can place cells help demarcate the locations of food?

To test this hypothesis, Neuroscience PhD student Linnea Herzog, together with staff member Leila May Pascual and Brandeis undergraduates Seneca Scott and Elon Mathieson, recorded from neurons in the hippocampus of rats as the rats explored a chamber. At the same time, different tastes were delivered directly onto the rats’ tongues.

Analyzing how place cells responded to tastes delivered inside or outside of their place field

The researchers found that about 20% of hippocampal neurons responded to tastes, and could discriminate between tastes based on palatability. Of these taste-responsive neurons, place cells only responded to tastes that were consumed within that cell’s preferred location. These results suggest that taste responses are overlaid onto existing mental maps. These place- and taste-responsive cells form a cognitive “taste map” that may help animals remember the locations of food.

Read more:  So close, rats can almost taste it

2019 SACNAS Regional Meeting to be held at Brandeis

Brandeis University will be hosting the 2019 New England SACNAS Regional Meeting on Saturday, March 23, 2019 from 9am-5pm.

SACNAS is an inclusive organization dedicated to fostering the success of Chicanos/Hispanics and Native Americans, from college students to professionals, in attaining advanced degrees, careers, and positions of leadership in STEM. More information about this event is available at the Brandeis SACNAS site.

Dr. Tepring Piquado, a Policy Researcher at RAND Corporation and Brandeis alum and Dr. Marcelle Soares-Santos, the Landsman Assistant Professor at Brandeis, will be keynote speakers. More information about the speakers and the Career and Professional development workshops and panel discussions are available as well.

This meeting is FREE, but all attendees must register by February 22, 2019.

 

2019 Sprout Awards Competition Announced

SPROUT logoThe Office of Technology Licensing (OTL) is excited to announce this year’s SPROUT awards competition!  SPROUT was created to help you bring your scientific research and entrepreneurial ambitions to life by providing seed funding and training to make your innovation a reality.

“It’s not just about the funding. It’s about all the opportunities that arise from participating in SPROUT” – Michael Rosbash, 2018 SPROUT PI

OTL, with support from the Office of the Provost & the Hassenfeld Family Innovation Center, will award up to a total of $100,000 divided among the most promising proposals seeking funding for lab-based innovations that require bench research, lab space and/or lab equipment.   All members of the Brandeis science community, including faculty, staff and students, are invited to submit an abstract for the 2019 round of funding. The preliminary application for abstract submission is now online.  These pre-applications must be received prior to 11pm on March 8th, 2019

In the past, successful SPROUT applications have come from all departments in the sciences including Biology, Biochemistry, Physics, and Chemistry.  Past candidates have proposed projects ranging from early-stage research and development to patent-ready projects.  Many undergraduates, graduates, staff and faculty have all pitched various projects from Vaccines Targeting HIV Sugars (Krauss Lab) to an Assay Kit for RNA-binding Protein Target (Rosbash Lab).

Have questions?  OTL is offering 20 minute appointment slots the week of February 28 at our office in Bernstein-Marcus, room 140.  Sign up here.

Eve Marder and Liqun Luo receive 2019 NAS awards

Eve Marder NAS award

Eve Marder, the Victor and Gwendolyn Beinfield Professor of Neuroscience, has received the 2019 National Academy of Sciences Award in the Neurosciences. The National Academy of Sciences is recognizing “Marder’s research of over more than 40 years that has provided transformative insight into the fundamental processes of animal and human brains.” NAS also called Marder “one of the most influential neuroscientists of her generation”.

Liqun Luo

In addition to her research, NAS acknowledged Marder’s impact upon young scientists working in her field. She has served as a mentor to “generations of neuroscientists”.  A book titled “Lessons from the Lobster: Eve Marder’s Work in Neuroscience” by Charlotte Nassim and was published in 2018.

The NAS Award in the Neurosciences is given only once every three years.

In addition to Marder, a Ph.D. alumnus is among the 18 scientists that are being recognized this year. Liqun Luo received the Pradel Research Award.  In the press release, NAS cited Luo’s “pioneering research into neural circuits of invertebrates and vertebrates.”

Luo earned his Ph.D. in Biology from Brandeis in 1992. He worked in Kalpana White’s lab. He is now a Professor and HHMI Investigator at Stanford University.

Read more at Brandeis Now.

Leading Science: Magnifying the Mind

Brandeis Magnify the Mind

Written by Zosia Busé, B.A. ’20

Joshua Trachtenberg, graduated from Brandeis in 1990 and is a leader in studying the living brain in action using advanced imaging technology. After establishing his research laboratory at UCLA, he founded a company – Neurolabware – in order to build the sophisticated custom research microscopes that are needed to perform groundbreaking work in understanding how the brain develops and how diseases and injuries interrupt its normal functioning. His company is created by scientists and for scientists, and is unique in creating high quality microscopes that are easy to use but also have the flexibility to be used in creative ways in innovative experiments, and in combination with a variety of other devices.

Brandeis University is now seeking to acquire one of these advanced microscopes that can observe fundamental processes inside the living brains of animals engaged in advanced behaviors. The reasonant scanning two-photon microscope from Neurolabware allows researchers to understand and image large networks of neurons in order to visualize which cells and networks are involved with specific memories or how these processes go awry in disease. “This approach is unparalleled. There is no other technique around that could possibly touch this,” Trachtenberg says.

Previous two-photon technologies permitted only very slow imaging, allowing scientists to take a picture about every two seconds, but the resonant two-photon technology is a major breakthrough that allows scientists to take pictures at about 30 frames per second. This speed increase is a major game changer. Not only can one observe activity in the brain at a higher speed, but it is possible to take pictures at a speed that is faster than the movement artifacts that must be accounted for, such as breathing or heart beats. Because one can see the movement, it can be corrected, allowing high resolution functional imaging of structures as small as single synaptic spines in the living brain. Further, advances in laser technology and fluorescent labels now allow scientists to see deeper into the brain than ever before, compounding the recent advantages of increased speed.

[Read more…]

Marder Lab wins the Ugly Sweater contest

 

A new feature was added to the 2018 Life Sciences Holiday Party – the Ugly Sweater Contest! Lab’s were encouraged to purchase, design, and bedazzle a sweater for their PIs to wear and show off at the party. Ballots for best sweater were cast at the event with the Marder lab submitting the winner. Eve’s sweater was decked out with crabs, lobsters, STG’s and neurons.  Congratulations!

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