```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns3:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/">
    <query_name>Neurologic Disorders-Anticonvulsants@12:51:56</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <panel>
        <panel_number>1</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>1</hlevel>
            <item_name>Neurologic Disorders</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\Neurologic Disorders (320-389)\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses \ Neurologic Disorders</tooltip>
            <class>ENC</class>
            <constrain_by_modifier>
                <modifier_name>Principal Diagnosis</modifier_name>
                <modifier_key>\\i2b2_DIAG\Principal Diagnosis\</modifier_key>
                <applied_path>\i2b2\Diagnoses\Neurologic Disorders (320-389)\%</applied_path>
            </constrain_by_modifier>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
    <panel>
        <panel_number>2</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>3</hlevel>
            <item_name>Anticonvulsants</item_name>
            <item_key>\\i2b2_MEDS\i2b2\Medications\MUL\(LME92) central nervous system agents\(LME103) anticonvulsants\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>medications \ central nervous system agents \ anticonvulsants</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns3:query_definition>

```

I want to find patients who have been diagnosed with Neurologic Disorders and have also been prescribed Anticonvulsants. The query is designed to look for any diagnoses of Neurologic Disorders (ICD-9 codes 320-389) as the principal diagnosis and any medications within the class of anticonvulsants (LME92, LME103) within the patient's medical record. The specificity scale is set to 0, indicating a broad search, and the query timing is set to ANY, meaning that the diagnosis and medication could have occurred at any time in the patient's history. The panel accuracy scale is set to 100, indicating a high level of confidence in the results.