Abstract
Objective: This study aimed to compare the cortical topographic mapping while performing cognitive activities of standardized short-term memory. Materials and Methods: The sample consisted of 30 individuals of both gender. Each individual participant of the survey was subjected to a short-term memory test for each sense. To carry out the EEG record, we used an electroencephalograph with 20 electrodes. The stimulus for the acquisition of short-term memory has always been made up of five items from different semantic classes. Results: The posterior right quadrant had a higher percentage of gamma rhythm during the tests of most senses. Conclusion: It was concluded that the right back quadrant has a higher gamma rhythms percentage during tests which involve somesthetic, olfactory and gustatory memory. On the other hand, the predominance of a gamma rhythm percentage in any quadrant when the auditory and visual memory was stimulated was not observed in this study.
Highlights
The organization of human memory consists of at least two systems with different lengths: a short-term memory (STM) and a long term memory (LTM)
Significant difference was observed (p = 0.039) when compared to control situation with the situation of evocation of visual short-term memory. In this case it was observed an increase in the percentage of the gamma rhythm of the posterior right quadrant during the recall phase of the sense of vision (Table 1)
During the study of auditory short-term memory, there was no significant difference in the percentage of gamma rhythm when compared to control situation with the auditory stimulus and short-term memory recall auditory (Table 2)
Summary
The organization of human memory consists of at least two systems with different lengths: a short-term memory (STM) and a long term memory (LTM). The formation of memories starts primarily with the acquisition of in-. (2016) Study of Brain Activation Using Electroencephalographic Technique for Performing Short-Term Memory Tests. The short-term memory stores the recent events by continuous neural activity because STM persists for just a minute [2]. The short-term memory has a limited supply of information that can seize only about 7 to 12 items at a time. The short-term memory has a limited supply of information that can retain only about 7 to 12 items at a time
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