This study describes  working  memory and developing and validating of an  L1 Persian reading span test for the measurement of working  memory of L1 Persian EFL learners. The test, which included  64  Persian  sentences,  was  developed  based  on  Daneman  and Carpenter’s (1980) reading  span  test.  The  shortcomings  of  the  test  were  identified  and  removed  over  three  pilot studies  ...

Background: Methadone maintenance has received little scientific attention regarding neurocognitive effects. This study is aimed to assess the neuropsychological performance of methadone maintenance patients (MMP) compared to those healthy controls. Methods: Thirty-five MMP and 35 healthy controls, matched for age, gender, education and employment status, examined on a battery of tests aimed at...

The working memory system maintains the limited information that can be kept in mind at one time. These memories are distinct from the vast amount of information stored in long-term memory. Here we give a brief summary of findings over the past half-century in the areas of working memory that we see as particularly important for understanding its nature. We discuss several current controversies...

The term working memory refers to a brain system that provides temporary storage and manipulation of the information necessary for such complex cognitive tasks as language comprehension, learning, and reasoning. This definition has evolved from the concept of a unitary short-term memory system. Working memory has been found to require the simultaneous storage and processing of information. It c...

Introduction: Cognitive dysfunction is the most common problem of patients with Alzheimer disease (AD). The pathological mechanism of cognitive impairment in AD may contribute to neuronal loss, synaptic dysfunction, and alteration in neurotransmitters receptors. Mitochondrial synapses dysfunction due to the accumulation of amyloid beta (Aβ) is one of the earliest pathological features of AD. Th...