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Automated Neuropsychological Assessment Metrics

Automated Neuropsychological Assessment Metrics

Assessing a potential brain injury should not be hard. In fact, the Automated Neuropsychological Assessment Metrics (ANAM®) test includes many tests and subtests that can give you a wide array of metrics to work with. With all that information, it might seem complicated. However, it's really not difficult to make it work for you; we can show you how with these 6 key subtests.

Simple Reaction Time

This is extraordinarily simple. The test taker is instructed to hit a specified key whenever a specified stimulus is present. This is often like the hearing tests when you are instructed to hit a button when you hear the beep. It measures pure reaction time as well as how much time it takes for your motor responses and actual cognitive processing times. These factors can be useful as a basic measurement to determine if the test taker's reaction times have slowed after an injury.

Sternberg Procedure

This test is designed to access and utilize the memory. This part of the test requires the test taker to memorize 6 letters, then once the participate indicates they have memorized the letters, they disappear from the screen. Then, different letters appear on the screen one at a time, and the test taker indicates whether it was part of the string or not. This test requires higher cognitive processing than some other tests, so it's results can be used to analyze more sensitive cases of TBI.

Mathematical Processing

Performing a basic arithmetic operation in sequence requires accessing the test takers working memory. They simply solve a simple math problem, then indicate whether the answer is greater than or less than 5. The test also uses the long term memory and is presumed to tap resources associated with the central processing. Test takers are timed, and slow responses after an injury may indicate a problem with the long term memory or central processing areas of the brain.

Spatial Processing

This test has two four-bar histograms which are presented on the monitor screen. One histogram is rotated, and the participant is requested to determine whether the two histograms are identical in shape.

This task is designed to examine the subject's ability to mentally rotate histograms and judge whether they are the same or different judgement about them. This spatial relations scale was apparently sensitive to traumatic brain injury.

Matching to Sample

This task taps short term spatial memory and pattern recognition skills by assessing the participant's ability to quickly and accurately choose a test stimulus which is identical to a standard stimulus presented previously.

This test is designed to confirm the predicted positive relationship with the spatial processing scale. It has a possible future use as a second measure of the simultaneous neuropsychological processing function tests.

Code Substitution, Learning and Code Substitution, Delayed subtests

This test is based on the symbol digit-coding paradigm, and emphasizes scanning and paired associate learning of the symbol–number pairs. There is also a recall component to the test.During this test a string of up to nine symbols and digits are paired in a “key” across the upper portion of the screen. Then there is a box at the bottom of the screen that contains a single symbol–number pair. These pairings at the bottom change, and at times may match the pairing in the key at the top.

There are two phases: a learning phase and a recall phase. During the learning phase, the test taker indicates whether the pairings at the bottom match the key and receives feedback for incorrect responses. During the recall phase, there is no key at the top and the participant must indicate if the pairings appearing at the bottom are correct or incorrect from memory.

The results of these tests are understood in context of a pre-injury and a post-injury scenario. The participant's scores may change based on mood, exhaustion, or other factors. However, for the most part, they are stable over time. After an injury, though, the test results will be markedly lower than the pre-injury.

Want to know more? To talk more about this, or anything else, please contact us. Thanks.

Resources:

http://faculty.unlv.edu/pjones/nltest_1.htm

http://www.sciencedirect.com/science/article/pii/S0887617706001843