Tom Stafford's Blog, page 159

In the Exploratorium's distorted room

The San Francisco Exploratorium is the Mind Hacks of science museums - every exhibit is hands on, giving you the chance to experiment with and experience for yourself scientific principles.

Obviously, one of my favourite exhibits was a psychology demonstration, one based on a classic visual illusion known as the "Ames' Room". We've a small model of this in Sheffield, which I use when teaching PSY101, but the Exploratorium's "distorted room" is full size demonstration of the effect. Here's me a...

How cannabis makes thoughts tumble

[image error]Cannabis smokers often report that when stoned, their thoughts have a free-wheeling quality and concepts seem connected in unusual and playful ways. A study just published online in Psychiatry Research suggests that this effect may be due to the drug causing 'fast and loose' patterns of spreading activity in memory, something known as 'hyper-priming'.

Priming is a well studied effect in psychology where encountering one concept makes related concepts more easily accessible. For example...

Tracking the unborn brain into childhood

[image error]A brain scanning technology called MEG is being used to track the function of unborn babies' brains as they grow inside the womb until after they've been born.

The full name for MEG is magnetoencephalography and it works by reading the magnetic fields created by the electrical signalling in the brain.

One of the advantages is that it can be used at various angles, doesn't require the person to be in a cramped space, and is less sensitive to movement, so is ideally suited to scanning babies.

This...

A man with virtually no serotonin or dopamine

[image error]Neuroskeptic covers a fascinating case of a man born with a genetic mutation meaning he had a severe lifelong deficiency of both serotonin and dopamine.

The case report concerns a gentleman with sepiapterin reductase deficiency, a genetic condition which prevents the production of the enzyme sepiapterin reductase which is essential in the synthesis of both dopamine and serotonin.

The most widely recognised symptoms of the condition, linked to the deficiency in dopamine which has an important...

The disembodied tic

[image error]There are numerous forms of body distortions and out-of-body experiences reported in the neurological literature but this is the first case I've found of someone who experienced tics that seemed to occur in external objects.

The report was published in the journal Neurology in 1997 and concerns a man with Tourette's syndrome, a condition of persistent tics.

These more commonly appear as almost irresistible repetitive movements that the person feels compelled to complete, but occasionally they c...

Go Cognitive guide to the brain

[image error]Go Cognitive is an awesome free video archive of interviews and discussion that aims to explain some of the core topics in cognitive neuroscience.

It's a project of the University of Idaho who've managed to convince some of the leaders in the science of the brain to talk about their work.

There are videos on fMRI, neuroplasticity, attention and neurological problems to name but a few, and there's even a talk on psychology and stage magic.

The website also has a demo section that demonstrates...

Future neuro-cognitive warfare

[image error]Every year the US Army holds an annual conference called the "Mad Scientist Future Technology Seminar" that considers blue sky ideas for the future of warfare. Wired's Danger Room discusses the conference and links to an unclassified pdf summary of the meeting which contains this interesting paragraph about 'neuro-cognitive warfare':

In the far term, beyond 2030, developments in neuro-cognitive warfare could have significant impacts. Neuro-cognitive warfare is the mashing of electromagnetic...

In the blood

[image error]Wikipedia has a page on the idea that blood type predicts personality, a discredited theory that nevertheless remains widespread in Japanese and Korean popular culture.

The idea seems to hold a similar cultural position as star signs and astrology and is used as a form of platform for discussing relationship compatibility and vague personality characteristics.

This is from a 1998 article from the Journal of Cross Cultural Psychology:

For example, in Southeast Asia, one can find many ideas about...

Skate deck neuroscience

[image error]Designer Emilio Garcia has created a series of skate decks decorated with fantastic cortex graphics.

It means every time you boardslide, you can see exactly how your brain has been lesioned.

Garcia is the same designer we've featured before on Mind Hacks, where we discussed his unusual jumping brain model.

Link to Garcia's brain pattern skate decks.

2010-03-05 Spike activity

Quick links from the past week in mind and brain news:

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Time magazine reports on how darkness can encourage dishonest acts even when anonymity is accounted for.

A study finding a link with aversion to inequality an activity in the ventral striatum is brilliantly covered by The Frontal Cortex.

The Point of Inquiry podcast has an excellent discussion on the psychology of cold reading.

A preview of a special journal issue on 'Neuroscience, power and culture' is covered by Advances in the History of...