Previous work found a significant reduction of the amplitude of the N2pc ERP component during the attentional blink in response to lateral visual targets, suggesting that the allocation of attention to visual targets is impaired during the attentional blink. Recent theorizing on the processes reflected by the N2pc suggests the possibility of distinct sets of neural mechanisms underlying its gen...

We compared the spatial and temporal allocation of attention as revealed by microsaccades. Observers viewed several concurrent "rapid serial visual presentation" (RSVP) streams in the periphery while maintaining fixation. They continually attended to, and discriminated targets in one particular, cued stream. Over and above this continuous allocation, spatial attention transients ("attention shi...

A sentence is readily understood and recalled when presented 1 word at a time using rapid serial visual presentation (RSVP) at 10 words/s (Potter, 1984). In contrast, selecting just 2 colored letters at 10 letters/s results in easy detection of the first target but poor recall for the second when it appears 200-500 ms later. This attentional blink disappears when all letters must be reported; i...

Hansen's disease is a disease of peripheral nerves. Some patients develop peripheral neuropathy before the diagnosis of the disease, and others develop these complications after starting therapy. Electrophysiological (EP) studies were carried out in Hansen's disease patients. This work studied the neural deficits, electromyography (EMG) and motor nerve conduction (MNC) variables in different ty...

Infantile cerebral palsy (CP) is a non-progressive brain disease of children, where the ability of movement, muscle tone and posture is abnormal due to the insult of developing, immature brain, mostly before, during or sometimes after birth. [Basically, CP started to develop impaired movement which associated with different abnormal reflexes, abnormal (hypotonic or hypertonic) muscle tone in ex...

Background: Radiofrequency rhizotomy is an efficacious technique for treatment of trigeminal neuralgia that classically performed with the patient awake. Previous studies have investigated methods both anatomic and neurophysiologic optimization nerve targeting. Methods: We a retrospective review prospectively collected data on patients undergoing radiofrequency under general anesthetic. Electro...

Background: Benign neonatal sleep myoclonus (BNSM) is a condition commonly mistaken for seizures. It characterized by self-limiting "lightning-like" myoclonic limb jerks that occur primarily during in the newborn phase but are not associated with epilepsy suddenly stops when infant agitated. This potentially resolved between ages of 2 and 6 months. The incidence BNSM per 1,000 births 0.8 to 3 c...

Whether interlimb reflexes emerge only after a severe insult to the human spinal cord is controversial. Here the aim was to examine interlimb reflexes at rest in participants with chronic (>1 year) spinal cord injury (SCI, n = 17) and able-bodied control participants (n = 5). Cutaneous reflexes were evoked by delivering up to 30 trains of stimuli to either the superficial peroneal nerve on the ...

Previous activation of the soleus Ia afferents causes a depression in the amplitude of the H-reflex. This mechanism is referred to as postactivation depression (PAD) and is suggested to be presynaptically mediated. With the use of a paired reflex depression paradigm (eliciting two H-reflexes with conditioning-test intervals from 80 ms to 300 ms), PAD was examined in a group of healthy individua...

Individually acquired activities of the central nervous system. these are same conditioned reflexes. However, Beritov does not agree in many respects with Pavlov, criticizes teaching Pavlov's reflexes, finding, for example, that is hypothetical, it sharply diverges from data general physiology, and therefore, instead he speaks individually or simply individual reflexes ... In preface, confesses...