¿Por qué el sonido de las uñas en una pizarra nos causa estrizo?


 

Kerchak.com

En un estudio publicado por la revista Journal of Neuroscience, se han puesto de relieve lasinteracciones entre la región del cerebro responsables del análisis del sonido, la corteza auditiva, y la amígdala, que participa en las emociones. Para llegar a esta conclusión, los científicos analizaron el cerebro de imágenes fMRI (functional magnetic resonance imaging) de 13 voluntarios. Situados en un escáner, escuchaban que cada vez resultaban más desagradables. Luego, los investigadores estudiaron la respuesta del cerebro de cada voluntario para cada sonido.

Los investigadores encontraron que la actividad de la amígdala y la corteza auditiva varía directamente de acuerdo con la calificación de cada tono dada oír los sujetos. Más específicamente, se ha encontrado que la parte emocional, la amígdala, y fue directamente modular la actividad de la parte auditiva del cerebro, tales como la percepción de los sonidos era más desagradable que otros. El análisis acústico de los sonidos permite ver que el más desagradable de todos tenían una frecuencia de entre 2.000 y 5.000 hertzios.

 El sonido de las uñas en una pizarra es uno de los más desagradables.

Los 10 sonidos más desagradables
Historia Completa http://kerchak.com/sonido-unas-pizarra-estrizo/

 

Can Depression in an Individual be predicted?


See on Scoop.itGabriel Catalano the name of the game

What if we had the ability to predict or even prevent mental illness? A study in the Australian Journal of Psychology1 suggests that we may be able to soon. We estimate that by 2030 depression will be the leading cause of disease burden worldwide2 This is forecasted despite the fact that our genetic and molecular understanding of the brain is advancing rapidly.
However, the Chinese Society of Psychiatry’s Chinese Classification of Mental Disorders-3 (CCMD-3), used by clinicians and researchers to guide them in making diagnoses regarding the mental health of patients, has not been updated to a degree compatible to those advances. The same is true of the CCMD-3 counterpart, the American Psychiatric Association’s Diagnostic and Statistical Manual of Mental Disorders IV (DSM-IV; although they will be publishing the DSM-5 in March of 2013. The CCMD-3 has not been updated in over a decade and the DSM-IV has been around unchanged for three times as long.

As to preventive protocols and treatments for depression, psychology and psychiatry are limited by the rather subjective diagnostic criteria often used to diagnose depression. The diagnosis often pivots on how a patient answers a series of questions about their recent psychological state, such as whether or not they perceive a decreased interest in their sexual desire. In this way, a mental health practitioner is looking for what we call clinical phenotypes. A phenotype is an observable characteristic of an organism, for instance, certain genetic phenotypes have been determined to correlate with depression and have offered some answers to the familial nature of the disease. Leer más “Can Depression in an Individual be predicted?”

Si el 85% de las decisiones de compra son inconscientes, ¿por qué no hacernos expertos en neuromarketing?

El análisis del comportamiento del consumidor gana cada vez más relevancia desde la óptica emocional y nos afecta a cualquier herramienta de marketing que pretendamos utilizar, desde la publicidad y la comunicación, el punto de venta, la imagen y posicionamiento de las marcas o cualquier otro estímulo que presentemos a nuestros potenciales consumidores o compradores.

El neuromarketing constituye un avance importante en el análisis y comprensión del comportamiento del consumidor a través de la aplicación rigurosa de los conocimientos y las técnicas de la neurociencia, y se revela como una nueva herramienta fundamental presente y futura de la investigación de mercados.


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El 85% de las decisiones de compra son inconscientes. Conducta, aprendizaje, memoria, sensación, atención, cognición, percepción, emociones y actividad cerebral son conceptos que han adquirido una nueva dimensión en el ámbito empresarial y, concretamente, en el contexto del marketingEsta dimensión es el eje principal del neuromarketing.

El análisis del comportamiento del consumidor gana cada vez más relevancia desde la óptica emocional y nos afecta a cualquier herramienta de marketing que pretendamos utilizar, desde la publicidad y la comunicación, el punto de venta, la imagen y posicionamiento de las marcas o cualquier otro estímulo que presentemos a nuestros potenciales consumidores o compradores.

El neuromarketing constituye un avance importante en el análisis y comprensión del comportamiento del consumidor a través de la aplicación rigurosa de los conocimientos y las técnicas de la neurociencia, y se revela como una nueva herramienta fundamental presente y futura de la investigación de mercados. Leer más “Si el 85% de las decisiones de compra son inconscientes, ¿por qué no hacernos expertos en neuromarketing?”

Profit vs. Principle: The Neurobiology of Integrity

Let your better self rest assured: Dearly held values truly are sacred, and not merely cost-benefit analyses masquerading as nobel intent, concludes a new study on the neurobiology of moral decision-making. Such values are conceived differently, and occur in very different parts of the brain, than utilitarian decisions.

“Why do people do what they do?” said neuroscientist Greg Berns of Emory University. “Asked if they’d kill an innocent human being, most people would say no, but there can be two very different ways of coming to that answer. You could say it would hurt their family, that it would be bad because of the consequences. Or you could take the Ten Commandments view: You just don’t do it. It’s not even a question of going beyond.”


Wired Science News for Your Neurons

Let your better self rest assured: Dearly held values truly are sacred, and not merely cost-benefit analyses masquerading as nobel intent, concludes a new study on the neurobiology of moral decision-making. Such values are conceived differently, and occur in very different parts of the brain, than utilitarian decisions.

“Why do people do what they do?” said neuroscientist Greg Berns of Emory University. “Asked if they’d kill an innocent human being, most people would say no, but there can be two very different ways of coming to that answer. You could say it would hurt their family, that it would be bad because of the consequences. Or you could take the Ten Commandments view: You just don’t do it. It’s not even a question of going beyond.” Leer más “Profit vs. Principle: The Neurobiology of Integrity”

The use of digital media comes at a price

A 21st century addiction … The digital world is having an effect on our brains. Photo: Illustration by Michael Mucci

If you’re tired and forgetful, and finding it hard to concentrate, log off the laptop and take a digital detox, says Dan Roberts.

As a writer, I spend a lot of my time glued to my computer screen: researching and pitching ideas, dealing with emails, keeping abreast of breaking news and, occasionally, even writing. While recently trying to launch an online magazine, my screen time increased still further and, unable to resist the temptation any longer, I also answered the call of Twitter. Setting aside BlackBerry time at evenings and weekends, I was devoting eight hours a day to digital media.

After a month, strange things started to happen. I found it difficult to concentrate on any given task for more than a few minutes. My mind felt scattered and my focus wandered from email to web page to tweet to email and back again.


DAN ROBERTS

Internet addiction.

A 21st century addiction … The digital world is having an effect on our brains. Photo: Illustration by Michael Mucci

If you’re tired and forgetful, and finding it hard to concentrate, log off the laptop and take a digital detox, says Dan Roberts.

As a writer, I spend a lot of my time glued to my computer screen: researching and pitching ideas, dealing with emails, keeping abreast of breaking news and, occasionally, even writing. While recently trying to launch an online magazine, my screen time increased still further and, unable to resist the temptation any longer, I also answered the call of Twitter. Setting aside BlackBerry time at evenings and weekends, I was devoting eight hours a day to digital media.

After a month, strange things started to happen. I found it difficult to concentrate on any given task for more than a few minutes. My mind felt scattered and my focus wandered from email to web page to tweet to email and back again. Leer más “The use of digital media comes at a price”