Posterior parietal cortex

The frontal eye field, also referred to as FEF, is a region of the brain located in the prefrontal cortex. The FEF is responsible for preparing and controlling eye movements through different pathways as well as visual perception and awareness. The electrical stimulations occurring in this area is able to trigger eye movements. It was first discovered by scientist Dave Ferrier in the 1870’s when he found that electric stimulation of this part of the brain produced movement in the eyes and head…

the lateral sulcus. One gyri seen here is the transverse temporal gyri which makes up the primary auditory cortex. The circular sulcus surrounds the insula and is lateral to the superior surface of the temporal lobe. The insula forms the floor of the lateral sulcus. The landmarks for the temporal lobe include the Sylvian fissure which separates the temporal lobe from the frontal and parietal lobes. The fusiform gyrus is seen on the inferior surface of the brain posteriorly into the occipital…

Bottom- up processing is also known as data-driven processing, as this theory believes that it begins with the stimulus itself. Implying that processing is carried to the retina then directly to the visual cortex. Top- down processing is the use of contextual information in pattern recognition- ‘the big picture’ where by images or words provide a context to prompt an understanding to the visual information. In most psychologists argue that in most cases perception…

The frontal, parietal, and temporal lobes are the most prone to suffer from an ischemic stroke due to their shared blood supply. The frontal lobe is located within the anterior cranial fossa, whereas the temporal lobe is situated in the middle cranial fossa. The middle cerebral artery (MCA) is the region of interest as this is the most common site for ischemic strokes. The MCA consists of four sections. The M1 segment consists of lenticulostriate vessels which irrigate the basal ganglia. The M2…

colleagues (Luders et al., 2009). They found a correlation between intelligence and cortical density’s measures. Results of subsequent studies showed that the correlation between the general index of intelligence and some areas of the frontal lobe, the parietal lobe, the cingulate gyrus and the limbic system were highest. Nevertheless, these subsequent studies didn’t agree about the exact location of the activity within those wide brain…

Synesthesia is defined as the perception of a certain stimulus, which is called the inducer, that automatically results in an internally generated sensation, which is called the concurrent (van Leeuwen, 2013). It is an uncommon condition but there are many different types of synesthesia. The most common type is synesthesia is grapheme-colour (GC) synesthesia. GC synesthesia is when letters induce the perception of colours (Ramachandran & Hubbard, 2001). Just as there are different types of…

about Einstein’s brain? Which part of the brain was unusually larger than the normal brain? Sandra Witelson discovered the Einstein’s peripheral lobe as 15 percent larger than the average brain. 3. What are gyri in the brain? The human cerebral cortex is very deeply wrinkled, and the…

80% of the cells bodies of the pyramidal tract are located in the precentral gyru of the frontal lobe (motor strip) and the other 20% originate in the postcentral gyru of the parietal lobe. They begin their descent from the cortex as a corona radiate before forming the internal capsule. This tract is direct and monosynaptic, the axons of its neurons do not synapse with other cells until they reach the final destination of either the brainstem or spinal…

A static guided tour through the process might look like the following: John’s dorsolateral prefrontal cortex prepares the plans setting the volleyball. Simultaneously, the visual, auditory, somatic, and proprioreceptive information provided by John’s sensory organs converge on his posterior parietal cortex to determine his body's position in space and the volleyball’s location in the external environment by converting the sensory data into a set of intrinsic…

were common to the three studies (Hunt, 2011, p.188). On the other hand, Professor Richard Haier reviewed studies and found a correlation between the volume of some brain areas and intelligence. Again, there was only one area, the left inferior parietal lobe, common to the 50% of the studies revised (Hunt, 2011,…