{"id":12448,"date":"2013-04-24T13:54:03","date_gmt":"2013-04-24T17:54:03","guid":{"rendered":"http:\/\/therapytoronto.ca\/news\/?p=12448"},"modified":"2013-04-25T00:05:37","modified_gmt":"2013-04-25T04:05:37","slug":"study-examines-mechanisms-behind-memory-decline-in-old-age","status":"publish","type":"post","link":"https:\/\/therapytoronto.ca\/news\/2013\/04\/study-examines-mechanisms-behind-memory-decline-in-old-age\/","title":{"rendered":"Study examines mechanisms behind memory decline in old age"},"content":{"rendered":"<p>From the University of Warwick press release via AlphaGalileo:<\/p>\n<blockquote><p><a href=\"http:\/\/therapytoronto.ca\/news\/wp-content\/uploads\/2012\/12\/senior_asian_man.jpg\"><img loading=\"lazy\" class=\"alignright size-full wp-image-9425\" alt=\"senior_asian_man\" src=\"http:\/\/therapytoronto.ca\/news\/wp-content\/uploads\/2012\/12\/senior_asian_man.jpg\" width=\"260\" height=\"260\" srcset=\"https:\/\/therapytoronto.ca\/news\/wp-content\/uploads\/2012\/12\/senior_asian_man.jpg 260w, https:\/\/therapytoronto.ca\/news\/wp-content\/uploads\/2012\/12\/senior_asian_man-150x150.jpg 150w\" sizes=\"(max-width: 260px) 100vw, 260px\" \/><\/a>Like birds which stop foraging too early on a berry-laden bush, <strong>a new study suggests older people struggle to recall items because they flit too often between \u2018patches\u2019 in their memories<\/strong>.<\/p>\n<p>The study by the University of Warwick published in the journal <em>Developmental Psychology<\/em> seeks to model the mechanisms behind memory decline in old age<em>.<\/em><\/p>\n<p>Its findings indicate that <strong>specific changes in the way older people access their memories, rather than a general \u2018slowing down\u2019 in mental processing speed, may be to blame<\/strong> for some aspects of memory decline. Using what is known as an \u2018animal fluency test\u2019, a group of 185 participants aged between 29 and 99 were asked to name as many animals as they could in three minutes.<\/p>\n<p>It has long been known that performance declines in line with age on these kinds of tests.<\/p>\n<p><strong>Typically, people will begin by naming animals in a semantically distinct \u2018patch\u2019 such as pets &#8211; for example dog, cat and hamster<\/strong>.<\/p>\n<p>When this patch becomes depleted and they can no longer recall any similar animals they jump to another patch, for example predatory animals such as tiger, lion and panther.<\/p>\n<p><strong>People who perform best at these tests seem to be able to identify the optimal frequency to switch patches<\/strong>, ie once a patch has been depleted to the point where their energies are better focused on another, more fruitful patch.<\/p>\n<p>The model developed by the University of Warwick researchers suggests that as people age, they tend to change patches too frequently, <strong>meaning they abandon patches before they have exhausted their full potential<\/strong>.<\/p>\n<p>It is this mechanism, known as cue maintenance, which the researchers believe is behind age-related decline in memory search.<\/p>\n<p>Dr Thomas Hills, Associate Professor in the Department of Psychology at the University of Warwick, said: \u201c<strong>Memory can be compared to a physical landscape where people move between patches in order to recall items<\/strong>.<\/p>\n<p>\u201cOlder people don\u2019t just move more slowly around that memory landscape, the way they move differs to the way younger people move.<\/p>\n<p>\u201cYou could say that their memory tends to be more flighty \u2013 like a bird which is foraging on a bush full of berries but only picks a few of them before moving to another bush.<\/p>\n<p>\u201c<strong>Moving between bushes takes energy and the next bush along might not be as full as the previous bush so this is not always a good strategy<\/strong>.<\/p>\n<p>\u201cLikewise, with memory there is an optimal time to leave each patch &#8211; and it seems older people simply leave too soon.\u201d<\/p>\n<p>Although further research is required to understand more deeply the mechanisms involved in memory search, Dr Hills had this suggestion to use these findings on a practical level.<\/p>\n<p>\u201cFor example, <strong>if you forget your shopping list at the supermarket, try to focus on recalling items category by category, rather than flitting between different types of groceries<\/strong>. At the same time, try to use what you\u2019ve already recalled to help you recall what you\u2019ve forgotten,\u201d he said.<\/p>\n<p>http:\/\/www2.warwick.ac.uk\/newsandevents\/pressreleases\/forage_longer_for<\/p>\n<p>&nbsp;<\/p><\/blockquote>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>From the University of Warwick press release via AlphaGalileo: Like birds which stop foraging too early on a berry-laden bush, a new study suggests older people struggle to recall items&#8230; <a class=\"read-more-link\" href=\"https:\/\/therapytoronto.ca\/news\/2013\/04\/study-examines-mechanisms-behind-memory-decline-in-old-age\/\">Read more &raquo;<\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[321,4],"tags":[12],"_links":{"self":[{"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/posts\/12448"}],"collection":[{"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/comments?post=12448"}],"version-history":[{"count":3,"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/posts\/12448\/revisions"}],"predecessor-version":[{"id":12556,"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/posts\/12448\/revisions\/12556"}],"wp:attachment":[{"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/media?parent=12448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/categories?post=12448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/therapytoronto.ca\/news\/wp-json\/wp\/v2\/tags?post=12448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}