Parietal region

HPPD has been studied with quantitative EEC. Compared to controls, people with HPPD show a faster alpha frequency and shorter visual-evoked-response latency, consistent with LSD-induced cortical disinhibition (Abraham and Duffy 1996). Conversely, the auditory-evoked-response latency is increased. Analyses indicate that these differences are predominant in temporal and left parietal regions. 

Kumari et al, (2003) 12 2 mg nicotine, subcutaneously N-Back Nicotine improved accuracy in all N-back conditions and reduced response times during the more demanding conditions of the task. Irrespective of drug condition, frontal and parietal regions were activated with increasing memory load. Nicotine, however, increased brain activation in the anterior cingulate (0-back, 1-back, 2-back), superior frontal (1-back, 2-back), and left superior parietal cortex (1-back, 2-back, 3-back), in the 3-back condition, nicotine reduced activation in the right superior parietal cortex. 

Distributional analysis of reaction times revealed that nicotine decreased the validity effect more in the high than in the low validity cue condition. Nicotine reduced orienting-related activation in the right parietal brain regions (TPJ), This effect occurred only in the condition with the high valid cues. Conversely the low valid cue condition increased neural activation in the right parietal regions. 

Another electric signal recorded from the surface of the skull is termed contingent negative variation (CNV). This is a very late potential fluctuation in the parietal region that arises when a subject participating in a reaction time experiment is advised, through a warning stimulus, of the imminence of another stimulus to which he or she has to respond. 

Premonitory symptoms and aura are absent with tension-type headache. The pain usually is mild to moderate in intensity and often is described as a duU, nonpulsatile tightness or pressure. Bilateral pain is most common, but the location can vary (frontal and temporal pain are most common occipital and parietal regions also may be affected). The pain is classically described as having a hatband pattern. Associated symptoms generally are absent, but mild photophobia or phonophobia may be reported. The disability associated with tension-type headache typically is minor in comparison with migraine headache, and routine physical activity does not affect headache severity. Palpation of the pericranial or cervical muscles may reveal tender spots or localized nodules in some patients. Tension-type headache is classified as either episodic (infrequent or frequent) or chronic based on the frequency and dmation of the attacks. ... 

Regarding the pharmacological effects of theanine, previous reports have indicated a reduction in blood pressure in spontaneously hypertensive rats, a relief from convulsions induced by caffeine, and an influence on the brain levels of norepinephrine, serotonin, 5-hydroxyindoleacetic acid, and dopamine. Moreover, oral intake of theanine results in the generation of a-electric waves in the occipital and parietal regions of the human brain Theanine-induced inhibition of glutamate transporter enhances the activity of an antitumor agent. It increased doxorubicin (DOX)-induced antitumor activity, and confirmed that this action contributed to the increase in the DOX concentration in a tumor with inhibition of the DOX efflux from tumor cells. ... 

The EGA is mainly responsible for supplying the supratentorial dura which covers the convexity. The anterior ethmoidal artery or the frontal branch of the middle meningeal artery supplies anterior aspect of dura mater. These arteries are the main suppliers for the anterior parietal regional dura of the convexity, but the blood supply may also come from the... 

Fisher 344 rats (N = 20) were anesthetized by 2 mg/kg intraperitoneal injection of barbiturate. The head of each rat was placed on a stereotactic frame and a burr hole was drilled 2 mm lateral and caudal to the mid-point of the coronal suture on the right parietal region. To induce tumor formation, using a 27G Hamilton syringe, in aseptic conditions, 10 /10 pL C6 cell suspension was slowly injected into the right caudate putamen at the depth of 3 mm from the brain surface. Immediately after removal of the syringe, the burr hole was closed with bone wax. 

Keywords— Parietal region, arithmetic, cognitive task. Near Infrared Spectroscopy (NIRS). 

Brain imaging techniques have been used to investigate the neural activities involved in mathematical thinking. Piazza et al. [1] showed that parietal and especially intrapa-rietal areas are the main key regions in number processing. In this study, they also found that symbol arithmetic and non-symbol arithmetic are performed in the parietal region. 

To our knowledge, Ritcher et al. [5] used NIRS techniques to measure Hb02 by arithmetical task in the parietal regions of both of hemispheres by arithmetical task. That study was the first NIRS findings on mental arithmetic to confirm that parietal regions are involved in the processing of arithmetic tasks. 

Mathematics plays an important role in education when children start to attend primary school. Cantlon et al. [7] found that preschool children develop their significant abilities to understand numerical task in early life. Some studies were stated the different aspects between children and adult involved in mental arithmetic. According to Ansari and Dhital [8], they used an event-related functional magnetic resonance imaging to determine brain activation in metal arithmetic increase of parietal region in adults which was compared with the increase of frontal region in children. 

Period 1 We measured two hemispheres to determine the left parietal region involved in higher changes Hb02 than... 

Fig. 3 Power of alpha frequency band (value x 10 T/cm) from total averaged data of all subjects at left right frontal and left parietal region...

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