The [delta] subunit of the GABA[subscript [Alpha]] receptor (GABA[subscript [Alpha]]R) is highly expressed in the dentate gyrus of the hippocampus. Genetic deletion of this subunit reduces synaptic and extrasynaptic inhibition and decreases sensitivity to neurosteroids. This paper examines the effect of these changes on hippocampus-dependent trace…

These experiments examined the release of acetylcholine in the hippocampus and striatum when rats were trained, within single sessions, on place or response versions of food-rewarded mazes. Microdialysis samples of extra-cellular fluid were collected from the hippocampus and striatum at 5-min increments before, during, and after training. These…

Does the language one speaks influence the way he thinks? Does it help define his world view? Anyone who has tried to master a foreign tongue has at least considered the possibility. Little linguistic peculiarities, though amusing, don't change the objective world people are describing. So how can they alter the way they think? Scientists and…

Event-related potentials were recorded to substantiate the claim of a distinct psycholinguistic status of (a) pronouns vs. proper names and (b) ellipses vs. proper names. In two studies 41 students read sentences in which the number of intervening words between the anaphor and its antecedent was either small or large. Comparing the far with the…

Recent research indicates that individuals with nonthalamic subcortical (NS) lesions can experience difficulties processing lexical ambiguities in a variety of contexts. This study examined how prior processing of a lexical ambiguity influences subsequent meaning activation in 10 individuals with NS lesions and 10 matched healthy controls.…

In Mandarin Chinese, word meaning is partially determined by lexical tone (Wang, 1973). Previous studies suggest that lexical tone is processed as linguistic information and not as pure tonal information (Gandour, 1998; Van Lanker & Fromkin, 1973). The current study explored the online processing of lexical tones. Event-related potentials were…

What, if anything, do teachers need to know about how the brain works to improve teaching and learning? After all, a plumber needs to know how to stop leaks--not the molecular structure of water. And one can learn how to use a computer without knowing how a computer chip works. Likewise, teachers need to know how to help students develop…

Udergraduate students may be attracted to science and retained in science by engaging in laboratory research. Experience as an apprentice in a scientist's laboratory can be effective in this regard, but the pool of willing scientists is sometimes limited and sustained contact between students and faculty is sometimes minimal. We report outcomes…

The "brain drain/brain gain" debate has been going on for the past 40 years, with irresolvable theoretical disputes and unenforceable policy recommendations that economists commonly ascribe to the lack of reliable empirical data. The recent report of the World Bank, "International migration, remittances and the brain drain", documents the…

This paper focuses on the shifting terrain of mobile researchers beginning with an overview of research and research policy on "brain mobility", and then discussing what we call their optical illusions/delusions. Subsequently, our main purpose is to elaborate on a line of inquiry that offers richer notions of researcher mobility, connectivity and…

Whether it is volcanoes or video games, teachers know that when children enjoy a subject, they are far more motivated to take charge of their education. What teachers are learning now is that offering high interest topics may be less important than offering kids challenging tasks--new problems to solve--that tap into the way children's brains are…

This article focuses on role of music education. If the society has changed how it values music, it is certainly worthwhile to reevaluate the role music should play in the education and development of a child. Children are not predisposed to be able to understand one style of music over another. Rather they learn traits of the style of their…

Purpose: Corticomuscular electroencephalographic-electromyographic (EEG-EMG) coherence elicited by speech and nonspeech oromotor tasks in healthy participants and those with Parkinson's disease (PD) was examined. Hypotheses were the following: (a) corticomuscular coherence is demonstrable between orbicularis oris (OO) muscles' EMG and scalp EEG…

This article examines the increasing number of college presidents leaving their posts in Iowa for higher-paying positions at other major research universities. With the recent departure of yet another popular president at the University of Iowa, members of the state's Board of Regents, the news media, and even faculty members are arguing that the…

Data from the Records Office of the University show that, over the period 1979-2003, Alemaya University trained and graduated a total of 492 students at Masters of Science degree level. The study also reveals that shortage of experienced and highly qualified resident national instructors, brain drain, scarcity of financial resources, lack of…