External feedback provides essential information for successful learning. Feedback is especially important for learning in early childhood, as toddlers strongly rely on external signals to determine the consequences of their actions. In adults, many electrophysiological studies have elucidated feedback processes using a neural marker called the feedback-related negativity (FRN). The neural gene...

Post-traumatic stress disorder (PTSD) is a syndrome causing from a severe traumatic happening that leads to threatened death or injury. PTSD is associated with changes in limbic, hippocampal, and prefrontal cortical region function due to changes in synaptogenesis, dendritic modifying, and neurogenesis. Changes in neuron in PTSD patients result from pathophysiological disturbances in inflammato...

Implantable image sensors have several biomedical applications due to their miniature size, light weight, and low power consumption achieved through sub-micron standard CMOS (Complementary Metal Oxide Semiconductor) technologies. The main applications are in specific cell labeling, neural activity detection, and biomedical imaging. In this paper the recent research studies on implantable CMOS i...

The brain consists of an enormous number of nerve cells which are interconnected in complex neural circuits. A complete understanding of how an individual neural circuit is constructed during development is a necessary first step in understanding the complex circuitry of the brain. The first level of the olfactory system of the fruitfly Drosophila is one of the most thoroughly investigated neur...

objective(s): nowadays much effort is being invested in order to diagnose the mechanisms involved in neural differentiation. by clarifying this, making desired neural cells in vitro and applying them into diverse neurological disorders suffered from neural cell malfunctions could be a feasible choice. thus, the present study assessed the capability of fetal brain extract (fbe) to induce rat bon...

MicroRNAs (miRNAs) are endogenously expressed noncoding RNAs that regulate mRNA expression. In vertebrates, more distinct miRNAs are expressed in the brain than in any other tissue, where they are hypothesized to function in neural development. Recent reports describing the effects of specific miRNAs during development, and studies employing miRNA depletion as neural commitment proceeds in the ...

The behaviour of an animal depends fundamentally on how the neurons in its nervous system are connected with one another and the motor output. During early human development over 100 billion neurons each establish from dozens to thousands of connections with one another and with muscle fibres. At all levels of the nervous system, precise connections emerge from initially imprecise patterns of c...

retinoic acid is one of the derivatives of vitamin A.it is used for treatment of dermatitis,but it has different teratogenic effects on developing organs depending on the different stages of embryonic life.neural  tube is made of two different parts:primary neural tube originated from embryo germinal layer and and secondary neural tube originated from tail bud.the persent study was designed to ...

Accurate prediction of solar activity as one aspect of space weather phenomena is essential to decrease the damage from these activities on the ground based communication, power grids, etc. Recently, the connectionist models of the brain such as neural networks and neuro-fuzzy methods have been proposed to forecast space weather phenomena; however, they have not been able to predict solar activ...