Navigation Links
Grasshopper love songs give insight into sensory tuning

As anyone whose nerves have been jangled by a baby's howl or who have been riveted by the sight of an attractive person knows, nature has evolved sensory systems to be exquisitely tuned to relevant input. A major question in neurobiology is how neurons tune the strength of their interconnections to optimally respond to such inputs.

Neuronal circuitry consists of a web of neurons, each triggering others by launching bursts of neurotransmitters at targets on receiving neurons to produce nerve impulses in those targets. Neurons adjust the strength of those connections adaptively, to amplify or suppress connections. Some four decades ago, a general principle called the "efficient coding hypothesis" was formulated, holding that sensory systems adjust to efficiently represent the complex, dynamic sounds, sights, and other sensory input from the environment.

Writing in the August 4, 2005, issue of Neuron, researchers led by Christian K. Machens of Cold Spring Harbor Laboratory and Andreas Herz of Humboldt-University Berlin describe experiments with grasshopper auditory neurons that reveal new details of such sensory coding. Their findings show that "optimal stimulus ensembles" that trigger the neurons differ from those the grasshopper hears in the natural environment but largely overlap with components of natural sounds found in mating and mate-location calls.

In their experiments, the researchers first played various snippets of white noise to isolated grasshopper auditory nerves and measured the electrophysiological signals reflecting the reactions of the auditory neurons to those sounds. These experiments revealed the distribution of stimuli called the "optimal stimulus ensemble" (OSE) that allowed the neurons in the system to perform optimally.

Once the researchers had characterized the OSE, they then analyzed how this measure compared to the neuronal response to natural sounds--including environmental sounds like the rustling of grass an
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Birds brains reveal source of songs
2. Zebra finches remember songs dad sang
3. Cities change the songs of birds
4. New insight into people who see colors in letters and numbers
5. Alaskan puzzles, monitoring provide insight about North Pacific salmon runs
6. New insight into regulation of blood stem cells
7. New insight into autoimmune disease: Bacterial infections promote recognition of self-glycolipids
8. New insights into how Huntingtons disease attacks the brain
9. Gambling monkeys give insight into neural machinery of risk
10. Structures of marine toxins provide insight into their effectiveness as cancer drugs
11. Flies on speed offer insight into the roles of dopamine in sleep and arousal
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Grasshopper love songs give insight into sensory tuning

(Date:8/29/2014)... release is available in German . ... signals between organisms is considered the oldest form of ... between conspecifics, for example, the sexual attraction between males ... responses and to coordinate reproductive behavior in males and ... University of the Algarve in Faro, Portugal, and at ...
(Date:8/29/2014)... of the Tibetan plateau -- the largest topographic anomaly ... both its profound effect on climate and its reflection ... GSA Bulletin , Katharine Huntington and colleagues employ a ... modern and fossil snail shells to investigate the uplift ... , Views range widely on the timing of surface ...
(Date:8/28/2014)... of marine protected areas is needed to protect fish ... investigators from the Wildlife Conservation Society and other organizations, ... the largest numbers of species, often at the expense ... functions. , Many vital ecological functions of ... are food for millions of people. This study ...
Breaking Biology News(10 mins):Ready for mating at the right time 2Ready for mating at the right time 3Snails tell of the rise and fall of the Tibetan Plateau 2Snails tell of the rise and fall of the Tibetan Plateau 3Snails tell of the rise and fall of the Tibetan Plateau 4Snails tell of the rise and fall of the Tibetan Plateau 5Snails tell of the rise and fall of the Tibetan Plateau 6Snails tell of the rise and fall of the Tibetan Plateau 7Study finds marine protected areas inadequate for protecting fish and ocean ecology 2
... Biological Sciences Research Council (BBSRC)-led Integrated Biorefining Research and ... which could be used to make biofuel production more ... Issue of the American Chemical Society journal Biochemistry ... the Universities of Warwick and British Columbia, could make ...
... Carolina State University have developed a new technique ... a computer,s ability to build computer models of ... algorithms used to build models of biological systems ... can account for uncertainty and biological variation. This ...
... Institute has won a four-year, $1.9 million grant from ... parasite that causes malaria, laying the groundwork to develop ... "Many antimalarial drugs alleviate symptoms, but do ... malaria parasites are able to persist asymptomatically in the ...
Cached Biology News:First wood-digesting enzyme found in bacteria could boost biofuel production 2New parallelization technique boosts our ability to model biological systems 2Scripps Research scientist wins $1.9 million grant to study malaria 2
(Date:8/29/2014)... Boston, MA (PRWEB) August 29, 2014 ... ones in the biotech start-up dense realm of Boston-Cambridge, ... alliances and able investors. James Sherley, the Director of ... made increasing the local and national visibility of his ... in September 2013. , In addition to a social ...
(Date:8/28/2014)... (PRWEB) August 28, 2014 Best Sanitizers, ... for the food processing industry, is asking industry professionals ... side comparison of the E2 soap they’re currently using ... Foam Soap . Hand hygiene is critical to ... food processing environment. Six key criteria are identified to ...
(Date:8/28/2014)... new research platform uses a laser to ... undergoing stress and heating, an approach likely ... microelectronics and batteries., This new technique, called ... heating and the surface stress of microscale ... discussed the merits of surface-stress influence on ...
(Date:8/28/2014)... The ability for organizations to attract top ... individuals to perform at the highest of levels, are ... to compete in this post–recession era. The pharmaceutical ... the sector increasingly focuses on the importance of employee-fit ... real results on the organization's development and the innovation ...
Breaking Biology Technology:The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 3The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 4Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2New analytical technology reveals 'nanomechanical' surface traits 2New analytical technology reveals 'nanomechanical' surface traits 3Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 3
... , In this ... merits. A comprehensive examination of four Information Dependent Acquisition (IDA) survey ... found. A significant number of metabolites were found with each mode ... from glyburide. , Overview ...
... Overview , ... using isotope coded affinity tags is to correctly identify and ... spectrum generated by mass spectrometry. Because MALDI-TOF mass spectrometry can ... can be used to quickly screen the ICAT reagent pairs ...
... Jason S. Wood, Varian, Inc. , ... Cytochrome P450s (CYPs) are heme-containing enzymes ... . CYPs are part of the Phase I (oxidative) metabolism within ... enabling either easy elimination of the drug or further conjugation by ...
Cached Biology Technology:Strategies to Identify and Confirm Phase I Metabolites of Glyburide Using the 4000 Q TRAP System 2Strategies to Identify and Confirm Phase I Metabolites of Glyburide Using the 4000 Q TRAP System 3Strategies to Identify and Confirm Phase I Metabolites of Glyburide Using the 4000 Q TRAP System 4Strategies to Identify and Confirm Phase I Metabolites of Glyburide Using the 4000 Q TRAP System 5Strategies to Identify and Confirm Phase I Metabolites of Glyburide Using the 4000 Q TRAP System 6Achieving Reliable Protein Quantitation Results Using ICAT Reagents, MALDITOF Mass Spectrometry, and Advanced Data Interpretation Tool 2Achieving Reliable Protein Quantitation Results Using ICAT Reagents, MALDITOF Mass Spectrometry, and Advanced Data Interpretation Tool 3Simultaneous Detection of CYP3A4, CYP2D6 and CYP2C9 Metabolites with a Single, Sensitive, LC/MS/MS Method 2Simultaneous Detection of CYP3A4, CYP2D6 and CYP2C9 Metabolites with a Single, Sensitive, LC/MS/MS Method 3
... Removal of excess dye terminators, template ... from the true sequencing products have proved ... This product is designed to work with ... BigDyeTM and DYEnamicTM ET. The unique uniformity ...
Human HVEM/TNFRSF14 Allophycocyanin MAb (Clone 94801)...
Mature rat whole blood (Sprague-Dawley, averaging 7-8 weeks of age, either sex) is collected at the time of slaughter and processed within 45 minutes. It is then filtered through gauze, pooled in an ...
... One-step High Sensitivity Freezing Point Osmometer ... for small volume applications, including pediatric, ... experimental animals. Automatic Calibration with ... Includes built-in printer, keypad and software ...
Biology Products: