Navigation Links
'Psychopaths' have an impaired sense of smell
Date:9/20/2012

People with psychopathic tendencies have an impaired sense of smell, which points to inefficient processing in the front part of the brain. These findings by Mehmet Mahmut and Richard Stevenson, from Macquarie University in Australia, are published online in Springer's journal Chemosensory Perception.

Psychopathy is a broad term that covers a severe personality disorder characterized by callousness, manipulation, sensation-seeking and antisocial behaviors, traits which may also be found in otherwise healthy and functional people. Studies have shown that people with psychopathic traits have impaired functioning in the front part of the brain - the area largely responsible for functions such as planning, impulse control and acting in accordance with social norms. In addition, a dysfunction in these areas in the front part of the brain is linked to an impaired sense of smell.

Mahmut and Stevenson looked at whether a poor sense of smell was linked to higher levels of psychopathic tendencies, among 79 non-criminal adults living in the community. First they assessed the participants' olfactory ability as well as the sensitivity of their olfactory system. They also measured subjects' levels of psychopathy, looking at four measures: manipulation; callousness; erratic lifestyles; and criminal tendencies. They also noted how much or how little they emphasized with other people's feelings.

The researchers found that those individuals who scored highly on psychopathic traits were more likely to struggle to both identify smells and tell the difference between smells, even though they knew they were smelling something. These results show that brain areas controlling olfactory processes are less efficient in individuals with psychopathic tendencies.

The authors conclude: " Our findings provide support for the premise that deficits in the front part of the brain may be a characteristic of non-criminal psychopaths. Olfactory measures r
'/>"/>

Contact: Ann Koebler
ann.koebler@springer.com
49-622-148-78414
Springer
Source:Eurekalert

Page: 1 2

Related biology news :

1. Impaired recovery of Atlantic cod -- forage fish or other factors?
2. The nose knows: Gene therapy restores sense of smell in mice
3. NIH-funded researchers restore sense of smell in mice using genetic technique
4. Making sense out of the biological matrix of bipolar disorder
5. The magnetic sense
6. NUS-led research team discovers how bacteria sense salt stress
7. Manatee hearing good enough to sense approaching motorboats
8. A test of the senses in the search for a shoal mate
9. The birdy smell of a compatible partner
10. Cant smell anything? This discovery may give you hope
11. Smell the potassium
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/1/2014)... 1, 2014, 10:20 AM EDT) It may be ... foods over unhealthy higher-calorie foods, according to new research ... Research Center on Aging (USDA HNRCA) at Tufts University ... the journal Nutrition & Diabetes , a brain ... it is possible to reverse the addictive power of ...
(Date:9/1/2014)... WASHINGTON About 50 years ago, electron microscopy revealed ... cells, move around and disappear. But scientists still don,t ... cloud-like collections of proteins are believed to be crucial ... offer a new approach to disease treatment., In the ... issuing a call to investigators from various backgrounds, from ...
(Date:9/1/2014)... week-long discussions and decisions of the Nomenclature Section of ... Australia in July 2011. This meeting is held every ... experts on the rules for naming algae, fungi and ... book for naming the organisms they study. This is ... of Nomenclature for algae, fungi, and plants, which was ...
Breaking Biology News(10 mins):Training your brain to prefer healthy foods 2Scientists call for investigation of mysterious cloud-like collections in cells 2Week-long meeting on naming algae, fungi, and plants recorded for posterity 2
... the Johns Hopkins School of Medicine and their colleagues have ... addition to their own can acquire new color vision, a ... new sensory information than anticipated. , This work, appearing ... ancestral primate inherited a new type of photoreceptor more than ...
... aren't as busy as, well, a bee. It all ... that a key to the insects' success in adapting to ... temperatures when flying to flowers. Whether and how they ... from the University of Washington and the University of Puget ...
... Schulich School of Medicine & Dentistry at The University ... Edinburgh, have discovered a way to kill the cystic ... of Dr. Miguel Valvano, Department of Microbiology and Immunology, ... of the Journal of Bacteriology, and highlighted in Nature ...
Cached Biology News:Making mice with enhanced color vision 2Making mice with enhanced color vision 3Bumblebee house warming -- it takes a village 2Bumblebee house warming -- it takes a village 3Key found to kill cystic fibrosis superbug 2
(Date:8/29/2014)... Pittcon is pleased to announce that ... Matsuda, Horiba Scientific, have organized a session on nanotechnology ... JASIS , Asia’s largest analytical and scientific instruments show, ... Japan. , The four speakers in this U.S. ... Molecules to Single Cells” will present their use of ...
(Date:8/29/2014)... Livermore, California (PRWEB) August 29, 2014 ... Department of Energy's 2014 Hydrogen Production R&D ... photoelectrochemically -- by splitting water using sunlight. , ... Laboratory (NREL) and the University of Nevada, Las ... its work developing models of photoelectrochemical solar-hydrogen production ...
(Date:8/29/2014)... MA, San Antonio, TX (PRWEB) August 29, 2014 ... ISO 9001:2008 and ISO 13485:2003 certified, GAMP® 5 ... has been awarded an international Phase II clinical ... with non-Hodgkin’s lymphoma. , Throughout this trial, Intrinsic ... including, but not limited to, protocol and charter ...
(Date:8/28/2014)... Best Sanitizers, Inc., the first company to ... asks food processors and food handling professionals to prepare ... currently using to Best Sanitizers’ Alpet® E3 Plus ... fighting cross-contamination and the spread of pathogens in the ... key criteria that make a hand sanitizer most effective, ...
Breaking Biology Technology:Fifth Annual U.S. Symposium at JASIS Organized by Pittcon’s Program Chairman Hub MacDonald 2Livermore Team Awarded for Hydrogen Production Research 2Intrinsic Imaging Awarded Phase II Clinical Trial to Assess New Treatment for Non-Hodgkin’s Lymphoma 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 2Food Processors and Food Handlers are Encouraged to Prepare for Fall Harvest by Evaluating Their Current Hand Sanitizer Using Nine Key Criteria 3
... Databases ... Receptors and Proteases, PARIS, August 18 Aureus ... life sciences discovery,announced today the release of three new ... for the important,drug targets Nuclear Receptor and Protease, as ...
... Aug. 18 LifeVantage Corporation,(OTC Bulletin Board: LFVN), the ... the progressive rate of aging, today announced,that the company,s ... interview on WallSt.net,s 3-Minute Press Show., The interview ... of the company,s latest press release., ...
... Inc. (OTC Bulletin Board: YGYB) ("Yongye" or the "Company"),a ... and,animals in the People,s Republic of China, today announced ... Second Quarter 2008 Highlights -- Revenue ... second quarter of 2007, and ...
Cached Biology Technology:Aureus Pharma Releases New Unified Knowledge Database 2[video] David Brown, President and CEO of LifeVantage Corporation, Discusses Record Page Views on WallSt.net's 3-Minute Press Show 2Yongye Biotechnology International Announces Second Quarter Results 2Yongye Biotechnology International Announces Second Quarter Results 3Yongye Biotechnology International Announces Second Quarter Results 4Yongye Biotechnology International Announces Second Quarter Results 5Yongye Biotechnology International Announces Second Quarter Results 6Yongye Biotechnology International Announces Second Quarter Results 7Yongye Biotechnology International Announces Second Quarter Results 8Yongye Biotechnology International Announces Second Quarter Results 9Yongye Biotechnology International Announces Second Quarter Results 10Yongye Biotechnology International Announces Second Quarter Results 11
Form: Ready to use Applications: ELISA...
EnzChek Ultra Xylanase Assay Kit *500 assays*...
Goat polyclonal to p27 KIP 1 ( Abpromise for all tested applications). Antigen: Synthetic peptide: C-KRPATDDS STQNK, corresponding to Internal sequence amino acids 153-165 of Human p27 KIP 1 ...
Defender against cell death 1...
Biology Products: