Navigation Links
A new tool for brain research
Date:8/1/2013

Physicists and neuroscientists from The University of Nottingham and University of Birmingham have unlocked one of the mysteries of the human brain, thanks to new research using functional Magnetic Resonance Imaging (fMRI) and electroencephalography (EEG).

The work will enable neuroscientists to map a kind of brain function that up to now could not be studied, allowing a more accurate exploration of how both healthy and diseased brains work.

Functional MRI is commonly used to study how the brain works, by providing spatial maps of where in the brain external stimuli, such as pictures and sounds, are processed. The fMRI scan does this by detecting indirect changes in the brain's blood flow in response to changes in electrical signalling during the stimulus.

A signal change that happens after the stimulus has stopped is also observed with the fMRI scan. This is called the post-stimulus signal and up until now it has not been used to study how the brain works because its origin was uncertain.

In novel experiments, the research team has now combined fMRI techniques with EEG, which measures electrical activity in the brain, to show that the post-stimulus signal also actually reflects changes in brain signalling.

18 healthy volunteers were monitored by using EEG to measure the electrical activity generated by their brains' neurons (the signalling cells) while simultaneously recording fMRI measurements. A stimulus of electrical pulses was used to activate the part of the brain that controls movement in the right thumb.

The scientists then compared the EEG and fMRI signals and found that they both vary in the same way after the stimulus stops. This provides compelling evidence that the post-stimulus fMRI signal is a measure of neuronal activity rather than just changes in the brain's blood flow. Curiously, the team also found the post-stimulus fMRI signal was not consistent, even though the stimulus input to the
'/>"/>

Contact: Emma Rayner
emma.rayner@nottingham.ac.uk
44-011-595-15793
University of Nottingham
Source:Eurekalert

Page: 1 2

Related biology news :

1. Scientists at Mainz University decode mechanisms of cell orientation in the brain
2. Researchers uncover cellular mechanisms for attention in the brain
3. Key target responsible for triggering detrimental effects in brain trauma identified
4. Gallo Center scientists identify key brain circuits that control compulsive drinking in rats
5. Fear factor: Missing brain enzyme leads to abnormal levels of fear in mice, reveals new research
6. Artifact suppression and analysis of brain activities with EEG signals
7. Low levels of toxic proteins linked to brain diseases, study suggests
8. A revolutionary new 3-D digital brain atlas
9. New virus isolated from patients with severe brain infections
10. A peptide to protect brain function
11. Dads life stress exposure can affect offspring brain development, Penn Study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/23/2015)... March 23, 2015 SoundView Technology Group issues a ... NXTD ) Wocket smart wallet. SoundView was one of the ... their experience with the Wocket in multiple scenarios and outlets. ... Foods and other retailers, making both debit and credit card ... also says, "If the company meets their plans in 2015, ...
(Date:3/23/2015)... , March 23, 2015  In the 2014 ... fraud case conviction losses. This figure accounts for a ... according to The Nilson Report, exceeds $11 billion globally. ... tool after a crime has occurred. Investor Mark ... polygraph expert Joe Paolella partnered to administer ...
(Date:3/20/2015)... --Research and Markets ( http://www.researchandmarkets.com/research/4stcg3/india_sensors ) ... Sensors Market Forecast and Opportunities 2020" report ... is projected to grow at a CAGR over ... industrial and healthcare sectors are the key application ... adoption of MEMS technology in sensors is growing ...
Breaking Biology News(10 mins):Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 2Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 3Technology Research Note Update from SoundView; Real-World Usage and Feedback of Wocket Smart Wallet at CVS, Whole Foods and other Retailers 4Polygraph Test Now Used to Protect Investors From Fraud 2Polygraph Test Now Used to Protect Investors From Fraud 3India Sensors Market Forecast and Opportunities 2020 - STMicroelectronics held the largest share in 2014 2India Sensors Market Forecast and Opportunities 2020 - STMicroelectronics held the largest share in 2014 3
... of Southampton has provided new insight into the ... such as Prion and Alzheimer,s disease. Prion ... where genetic mutations, or more commonly, interactions between ... proteins in neurons to become misfolded or misrouted. ...
... major advance for the sustainable use of a critical ... World Wildlife Fund (WWF) today released the most comprehensive ... Asian countries, including data that makes it possible to ... natural stocks of these versatile, economically important plants. ...
... landscapes are crucially at risk due to global warming ... Assessment (ABA), a new report prepared by 253 scientists ... of Arctic Flora and Fauna (CAFF), the biodiversity working ... zone, the high Arctic, may disappear. Polar bears and ...
Cached Biology News:New insight into protein misfolding in neurodegenerative disorders 2First-ever book on Mekong rattan species aims to promote sustainable practices 2First-ever book on Mekong rattan species aims to promote sustainable practices 3Arctic biodiversity under serious threat from climate change according to new report 2Arctic biodiversity under serious threat from climate change according to new report 3
(Date:3/26/2015)... March 26, 2015  BioNano Genomics, Inc., the leader ... Salyer as chief commercial officer. Salyer has more ... sales teams in life sciences. At BioNano, Salyer will ... a genome-mapping platform to assemble a comprehensive view of ... To date, 32 institutions located in the ...
(Date:3/26/2015)... "In America," the popular news television program that ... hosted by legendary film actor James Earl Jones, has announced ... upcoming segment. , Botany is commonly described as the ... quite a bit more complicated than that. Scientists and other ... organisms, from the smallest bacteria known to man to the ...
(Date:3/25/2015)... 2015 /PRNewswire/ - SQI Diagnostics Inc. ("SQI" or the "Company") ... of recent discussions with certain shareholders representing approximately 45% ... after dealing with certain matters including the appointment of ... on March 26, 2015 (the "Meeting") it intends to ... will take place when the Meeting reconvenes. The Meeting ...
(Date:3/25/2015)... March 25, 2015 Accelovance, a therapeutically focused ... for "Best Contract Research Organization" at the upcoming Vaccine ... Congress. This is the eighth consecutive ... the award, winning for "Best Contract Research Organization" in ... distinction in 2013. "We,re excited to be ...
Breaking Biology Technology:BioNano Genomics Appoints Terry Salyer as Chief Commercial Officer 2BioNano Genomics Appoints Terry Salyer as Chief Commercial Officer 3SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 2SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 3SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 4SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 5Accelovance Nominated for 2015 Vaccine Industry Excellence (ViE) Awards 2
Dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide...
Raised to arginine vasopressin coupled to bovine thyroglobulin with carbodiimide ....
Chicken polyclonal to DCTD ( Abpromise for all tested applications). Antigen: Full length protein (Human) Entrez GeneID: 1635 Swiss Protein ID: P32321...
...
Biology Products: