Memento | Clipmarks


	Memento

jmora

11-15-2009 12:03 PM

16 views

tags:

cognitive, memory

jmora says:

Memory is often thought to be formed by modifications in neural connections in our brain. However, evidence suggests that there are three types of memory: long term memory, short term memory and working memory. It is hard that structural changes may occur for the formation of short term memory and it is completely impossible for working memory.

Speculation: working memory is probably due to neural excitation, and if I recall correctly the number of items that memory may contain is the 'magical' 7 2.

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padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.theness.com/neurologicablog/?p=1210">There are competing theories as to how human memory is constructed, and new research is adding data all the time</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.theness.com/neurologicablog/?p=1210">With regard to memory a number of cases demonstrated an apparent disconnect between short term memory and long term memory, and so this became the classic view</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.theness.com/neurologicablog/?p=1210">The most dramatic cases are those of Werkincke-Korsakoff syndrome</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.theness.com/neurologicablog/?p=1210">This results in a disconnect between short term memory and long term memory – so patients have about a three minute window of short term memory but form no new long term memories</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.theness.com/neurologicablog/?p=1210">Later research revealed that there is also something called working memory</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.theness.com/neurologicablog/?p=1210">For example, in order to do math you need to hold numbers in your head and then perform calculation operations on those numbers – that’s working memory</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.theness.com/neurologicablog/?p=1210">However, if you just hold a phone number in your head for a few minutes until you dial it, that is short term memory</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.theness.com/neurologicablog/?p=1210">It is possible that working memory represents a collaboration among various brain systems that include short term memory</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/951975F7-9D4B-40BE-B1FA-66D4E4AE4AD2/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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