- Brain Trauma.
Symptoms:Patients of acalculia demonstrate difficulty in performing simple mathematical operations, like addition, subtraction, multiplication and division. As calculation and identification of numbers are connected with the integration of numerous cognitive , experts believe that an individual with this condition experiences problems in any of these four perceptions: Understanding the fact that every number denotes a certain value and immediately recognizing this value.
- Recognizing the value of a number with respect to the other numbers. For example, they might face difficulty in understanding that the number 5 is greater than 3 or 6 is less than 7.
- Determining the location of a number in a series of numbers.
- Associating the symbol of a number with its name. For example, they might face problems associating the word “three” with the symbol “3?.
- Confrontation naming, where the subject has to name the parts of a given object.
- Reading tests.
- Calculation tests.
- Clock drawing.
- Finger naming.
- Testing of left/right orientation.
- Writing tests.
- Spelling tests.
- Event related potentials (ERP).
- Functional magnetic resonance imaging or fMRI.
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