Events experienced within a period of time after the onset of the disease cannot be recalled, memory of recent events is poor, new memories cannot be formed, and long-term memories are still preserved.

Inability to recall events at a certain stage before the onset of the disease, loss of past information related to time gradients

Including déjà vu, old things seeming new again, and repetitive memory errors, which are related to the process of memory loss.

There are chronological errors in memory, and the events experienced in the past life are attributed to another unrelated period. The patient is not aware of it and firmly believes that what he said is completely correct.

Recalling events or experiences that have never happened in the past as real, and being unable to correct errors on your own

1.Broca’s aphasia

2.Wernicke’s aphasia

3.Conduction aphasia

1. Transcortical motor aphasia

2. Transcortical sensory aphasia

3. Transcortical mixed aphasia

Fluent aphasia. Posterior middle temporal gyrus lesions on the dominant side.

Thalamic aphasia:

Aphasia caused by damage to the internal capsule and basal ganglia:

The Anterograde Digit Span Test is used to measure attention and transient memory.

The retrograde digit span test asks the patient to speak a given sequence of digits backwards. This is a more complex test that requires the ability to store and process digits.

Patients who recall with the help of reminders or vocabulary lists may be able to retain information but have retrieval difficulties; patients who recall information with the help of reminders or vocabulary lists may have storage impairments. Patients with early-stage dementia may only exhibit retrieval impairment.

Including basic knowledge learned in school, such as the country's capital and famous figures; current information such as the current president, prime minister and related public figures; one's own related information, such as home address and phone number, etc.

(1) Speech fluency:

(2) Speech disorder:

(3) Difficulty finding words:

(4) Paraphrases, new words, meaningless gibberish and stereotyped speech:

(5) Grammatical barriers:

Simple memory impairment type

Impairment in multiple cognitive domains

Memory function retained

The patient's basic perceptual function is normal, but he loses the ability to distinguish the existence, spatial position and relationship between parts of his own body.

clinically possible