February 2010 Blog Posts (9)

The power of prediction reduces activation in the primary visual cortex



Prediction is an invaluable skill for navigating through complex environments. Somehow the brain generates predictions about perceptual inputs it's likely to receive using contextual information from recent memory. Statistical regularities are learned (e.g. movement… Continue

Added by William Lu on February 25, 2010 at 2:30pm — 1 Comment

AAIDD formal response to APA DSM-V proposed intellectual disability (ID) definition

Yesterday an AAIDD subcommittee published its formal response the the
American Psychiatric Association's DSM-V proposed definition for
intellectual disability (ID). A copy can be viewed/downloaded at the following link (click here)


Added by Kevin McGrew on February 23, 2010 at 1:20pm — No Comments

Sex differences in parking are affected by biological and social factors

The stereotype of women's limited parking skills is deeply anchored in modern culture. Although laboratory tests prove men's average superiority in visuospatial tasks and parking requires complex, spatial skills, underlying mechanisms remain unexplored. Here, we investigated performance of beginners (nine women, eight men) and more experienced drivers (21 women, 27 men) at different parking manoeuvres. Furthermore, subjects conducted the mental rotation test and self-assessed their parking… Continue

Added by Beyza Oren on February 20, 2010 at 8:30am — No Comments

The best way to operate gliomas around eloquent areas of brain

We can be quite accurate in localing gliomas where they are situated in brain with frameless neuronavigation or frame based approach. fMRI is useful but is not accurate to localise speech. The peroperative localisation has therfore become imporatantand is really helpful. The normal position of motor strip and speech area can be marked on scalp but because of shift by tumour these landmarks also change.

The best way to deal with this is doing surgery in awake patient. I have done 40…

Continue

Added by Karam Chand Sharma on February 14, 2010 at 4:08am — 2 Comments

Critique of DSM-V proposed definition and criteria for intellectual disability (ID)

Dr. Dale Watson, a clinical neuropsychologist, has written an excellent guest post re: concerns for the DSM-V proposed definition and criteria for ID over at my ICDP blog. If interested you can check it out here.

Added by Kevin McGrew on February 12, 2010 at 11:38am — No Comments

time series and neural network desgin

What is relation with temporal neural network and time series?

Added by Song Pan on February 11, 2010 at 12:28pm — No Comments

WISC-IV and WAIS-IV research--what is out there? Looking for correlation matrices

I'm trying to locate research that has been published re: the new WISC-IV and WAIS-IV. I just ran a search of a dissertation database and found zero for the WAIS-IV but quite a few for the WISC-IV. The results can be found by clicking here.



I'm particularly interested in finding any published or yet to be published correlation matrices that include either the WAIS-IV/WISC-IV and at least one other… Continue

Added by Kevin McGrew on February 10, 2010 at 10:43am — No Comments

Understanding Wechsler IQ score differences: The CHC evolution of the Wechsler FS IQ scores over time

I have posted an analysis of the CHC (Cattell-Horn-Carroll) cognitive abilities measured by the Wechsler subtests, across the various editions, at IQs Corner. The post suggests that examiners should consider the changing CHC content of the various Wechsler batteries when attempting to compare scores from different editions. Enjoy. Feedback/comments welcomed.

Added by Kevin McGrew on February 7, 2010 at 12:35pm — No Comments

EGYPT: The alarming childhood neurodevelopmental disorders situation is bringing neuroimaging genetics and community health into the ENGINES.

Dear colleagues,



Egypt is facing an alarming gap between innovations in childhood learning and developmental disabilities (LDD) research and their delivery to communities. This gap is now attaining public health significance. Egypt is the most populous country in the Middle East (~82 million inhabitants) with the highest rate (25-60%) of consanguinity through marriages (Alwan and Modell, 1997) most of them are cousin marriages (i.e., parental consanguinity). This high consanguinity… Continue

Added by Cherine Fahim on February 1, 2010 at 5:05am — 2 Comments

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