Positive Technology Journal

Via Omni Brain

According to this press release, psychologists at Iowa State have done the first study on violence desensitization from video games.

From the press release:

Ames, Iowa -- Research led by a pair of Iowa State University psychologists has proven for the first time that exposure to violent video games can desensitize individuals to real-life violence.

Nicholas Carnagey, an Iowa State psychology instructor and research assistant, and ISU Distinguished Professor of Psychology Craig Anderson collaborated on the study with Brad Bushman, a former Iowa State psychology professor now at the University of Michigan and Vrije Universiteit, Amsterdam.

They authored a paper titled "The Effects of Video Game Violence on Physiological Desensitization to Real-Life Violence," which was published in the current issue of the Journal of Experimental Social Psychology, a professional journal. In this paper, the authors define desensitization to violence as "a reduction in emotion-related physiological reactivity to real violence."

Their paper reports that past research -- including their own studies -- documents that exposure to violent video games increases aggressive thoughts, angry feelings, physiological arousal and aggressive behaviors, and decreases helpful behaviors. Previous studies also found that more than 85 percent of video games contain some violence, and approximately half of video games include serious violent actions.

Their latest study tested 257 college students (124 men and 133 women) individually. After taking baseline physiological measurements on heart rate and galvanic skin response -- and asking questions to control for their preference for violent video games and general aggression -- participants then played one of eight randomly assigned violent or non-violent video games for 20 minutes. The four violent video games were Carmageddon, Duke Nukem, Mortal Kombat or Future Cop; the non-violent games were Glider Pro, 3D Pinball, 3D Munch Man and Tetra Madness.

After playing a video game, a second set of five-minute heart rate and skin response measurements were taken. Participants were then asked to watch a 10-minute videotape of actual violent episodes taken from TV programs and commercially-released films in the following four contexts: courtroom outbursts, police confrontations, shootings and prison fights. Heart rate and skin response were monitored throughout the viewing.

When viewing real violence, participants who had played a violent video game experienced skin response measurements significantly lower than those who had played a non-violent video game. The participants in the violent video game group also had lower heart rates while viewing the real-life violence compared to the nonviolent video game group.

"The results demonstrate that playing violent video games, even for just 20 minutes, can cause people to become less physiologically aroused by real violence," said Carnagey. "Participants randomly assigned to play a violent video game had relatively lower heart rates and galvanic skin responses while watching footage of people being beaten, stabbed and shot than did those randomly assigned to play nonviolent video games.

See also a critique to this article by Ed Castronova, a "synthetic worlds" researcher.

Via Mind Hacks 

A team of three Italian researchers (Emanuele Olivetti, Diego Sona, and Sriharsha Veeramachaneni) won $10000 in a brain-activity interpretation competition. Entrants were provided with the fMRI data and behavioural reports recorded when four people watched two movies. The competitors' task was to create an algorithm that could use the viewers ongoing brain activity to predict what they were thinking and feeling as the film unfolded.

The Italian team resulted to be the most accurate, with a correlation of .86 for basic features, such as whether an instant of the film contained music. The full results are here.

Via Medgadget

According to estimates by University of Pennsylvania researchers, information transmission of the human retina is as fast as a regular Ethernet connection:

Read the press release

Via Emerging Technology Trends

Adrian White, Analytic Social Psychologist at the University of Leicester has developed the first ever World Map of Happiness. He analysed data published by several organizations, including UNESCO, the CIA, the New Economics Foundation, and the WHO, to create a global projection of subjective well-being.

Below is a small version of this map (source: Emerging Technology Trends). On this map, red indicates a high level of happiness.

A Flash version of this map is available here.

Via Emerging Technology Trends
 

 

This new fingertip-mounted device uses miniature thin-film force sensors, a tri-axial accelerometer, and a motion tracker. A real-time, network-based, multi-rate data-acquisition system was developed using LabVIEW virtual instrumentation technology. Biomechanical models based on human-subject studies were applied to the sensing algorithm. A new 2D touch-based painting application (Touch Painter) was developed with a new portable, touch-based projection system (Touch Canvas). Also, a new 3D object-digitizing application (Tactile Tracer) was developed to determine object properties by dynamic tactile activities, such as rubbing, palpation, tapping, and nail-scratching.

Neurofeedback for children with ADHD: a comparison of SCP- and theta/beta-protocols

Prax Kinderpsychol Kinderpsychiatr. 2006;55(5):384-407

Authors: Leins U, Hinterberger T, Kaller S, Schober F, Weber C, Strehl U

Research groups have consistently reported on behavioral and cognitive improvements of children with ADHD after neurofeedback. However, neurofeedback has not been commonly accepted as a treatment for ADHD. This is due, in part, to several methodological limitations. The neurofeedback literature is further complicated by having several different training protocols. Differences between the clinical efficacy of such protocols have not been examined. This study addresses previous methodological shortcomings while comparing the training of theta-beta-frequencies (theta-beta-group) with the training of slow cortical potentials (SCP-group). Each group comprised of 19 children with ADHD that were blind to group assignment. The training procedure consisted of 30 sessions and a six months follow-up training. Pre-/post measures at pretest, the end of the training and the follow-up included tests of attention, intelligence and behavioral variables. After having already reported intermediate data (Strehl et al. 2004), this paper gives account on final results: Both groups are able to voluntarily regulate cortical activity, with the extent of learned self-regulation depending on task and condition. Both groups improve in attention and IQ. Parents and teachers report significant behavioral and cognitive improvements. Clinical effects for both groups remain stable six months after training. Groups do not differ in behavioral or cognitive outcome variables.

From New Scientist

Partially blind people can now read using a machine that projects images directly onto their retinal cells.

The Retinal Imaging Machine Vision System (RIMVS) can also be used to explore virtual buildings, allowing people to familiarise themselves with new places.

The device, developed by Elizabeth Goldring, a poetry professor at the Massachusetts Institute of Technology, who is herself partially blind, is designed for people who suffer vision loss due to obstructions such as haemorrhages or diseases that erode the cells on the retina.

The user looks through a viewfinder and the images are focused directly onto the retina. The person can guide the light to find the areas that still work best. The machine uses LED light and costs just $4000.

Re-blogged from WMMNA 

The Mouthpiece has been designed to help strangers who find it difficult to express their feelings or opinions face to face. A small LCD monitor and loudspeakers are covering the mouth of the wearer like a gag. The equipment replaces the real act of speech with pre-recorded, edited and electronically perfected statements, questions, answers, stories, etc.

Re-blogged from Smart Mobs

AsiaMedia reports "Japan's No. 2 telecom operator KDDI Corp said yesterday that it had developed a server which keeps an electronic record of the smallest events in a person's life and lets others sift through them.

The Lifelog Pod jots down every activity made through a cellphone or computer, including taking photographs, searching for a restaurant, listening to music and managing money. While some may loathe the thought of an omniscient network, the company said it could provide a way to make friends."

Users can learn who else their friends chat with or delve through their companions" data -- minus areas protected by passwords -- to gauge their interests," a KDDI spokesman said.

"Your information is connected to that of your friend, and that of his friend, and so on.

"In this country of cellphone aficionados, cellphone users can also put their blogs on the common server. Only people who have a common connection -- such as a mutual friend -- will be able to access each other's data.

"This isn't a violation of privacy rights," the KDDI official said. "It is simply that everyone is connected."

Japan: A mobile network that keeps track of everything you do

A P300 event-related potential brain-computer interface (BCI): The effects of matrix size and inter stimulus interval on performance.

Biol Psychol. 2006 Jul 21;

Authors: Sellers EW, Krusienski DJ, McFarland DJ, Vaughan TM, Wolpaw JR

We describe a study designed to assess properties of a P300 brain-computer interface (BCI). The BCI presents the user with a matrix containing letters and numbers. The user attends to a character to be communicated and the rows and columns of the matrix briefly intensify. Each time the attended character is intensified it serves as a rare event in an oddball sequence and it elicits a P300 response. The BCI works by detecting which character elicited a P300 response. We manipulated the size of the character matrix (either 3x3 or 6x6) and the duration of the inter stimulus interval (ISI) between intensifications (either 175 or 350ms). Online accuracy was highest for the 3x3 matrix 175-ms ISI condition, while bit rate was highest for the 6x6 matrix 175-ms ISI condition. Average accuracy in the best condition for each subject was 88%. P300 amplitude was significantly greater for the attended stimulus and for the 6x6 matrix. This work demonstrates that matrix size and ISI are important variables to consider when optimizing a BCI system for individual users and that a P300-BCI can be used for effective communication.

RFID and The Internet of Things

After a succesfull CrashCourse in May, Mediamatic now presents a second workshop on RFID and The Internet of Things: 11, 12, 13 September 2006 :: Confirmed lecturers and trainers: Julian Bleecker (US), Timo Arnall (Norway) and Arie Altena (NL).

RFID allows for the unique identification of objects, and any kind of online data can be linked to these unique ID's. If RFID becomes an open web-based platform, and users can tag, share, and contribute content to the digital existence of their own places and objects, we can truly speak of an Internet of Things. This opens perpectives for new sustainability scenario's, for new relations between people and the stuff they have, and for other locative applications.

The participants of this workshop will develop critical, utopian or nightmarish concepts for an Internet of Things in a hands-on way. Ideas can range from scripts for small new rituals to outlines of societal changes of epic scale. Prototypes can be tested with the workshop tools The Symbolic Table or the Nokia3220 phone with RFID reader.

The workshop has room for 16 designers, artists, thinkers and makers. Participation fee is €350 per person, ex BTW. Lunches, technical equipment and assistance are included. If you want to participate in this workshop, please register at our online registration form.

Re-blogged from Smart Mobs

Young people value their mobile phone more than television, a new study has found. The survey, conducted by the LondonSchool of Economics and CarphoneWarehouse, polled over 16,500 young people in the UK to find out how mobile phones have changed the way we live.

Over a quarter of people aged 18-24 highlighted their mobile phone as more important than the internet, TV, MP3 player and games console. Only 11 per cent chose TV, while nearly half voted for the internet.

Via Science Daily  

More than $4 million in equipment upgrades will shine 100 million pixels on Iowa State University's six-sided virtual reality room. That's twice the number of pixels lighting up any virtual reality room in the world and 16 times the pixels now projected on Iowa State's C6, a 10-foot by 10-foot virtual reality room that surrounds users with computer-generated 3-D images. That means the C6 will produce virtual reality at the world's highest resolution.

Read the article

Motor imagery of walking following training in locomotor attention. The effect of 'the tango lesson'

Neuroimage. 2006 Jul 20;

Authors: Sacco K, Cauda F, Cerliani L, Mate D, Duca S, Geminiani GC

The hypothesis of this study is that focusing attention on walking motor schemes could modify sensorimotor activation of the brain. Indeed, gait is a learned automated process, mostly regulated by subcortical and spinal structures. We examined the functional changes in the activity of the cerebral areas involved in locomotor imagery tasks, before and after one week of training consisting of physical and mental practice. The aim of the training was to focus the subject's conscious attention on the movements involved in walking. In our training, subjects were asked to perform basic tango steps, which require specific ways of walking; each tango lesson ended with motor imagery training of the performed steps. The results show that training determines an expansion of active bilateral motor areas during locomotor imagery. This finding, together with a reduction of visuospatial activation in the posterior right brain, suggests a decreased role of visual imagery processes in the post-training period in favor of motor-kinesthetic ones.