Speech perception
Agnosia is "the loss or diminution of the ability to recognize familiar objects or stimuli usually as a result of brain damage". There are several different kinds of agnosia that affect every one of our senses, but the two most common related to speech are speech agnosia and phonagnosia.
Mixed transcortical aphasia
A stroke is one of the leading causes of disability in the United States. Following a stroke, 40% of stroke patients are left with moderate functional impairment and 15% to 30% have a severe disability as a result of a stroke. A neurogenic cognitive-communicative disorder is one result of a stroke. Neuro- meaning related to nerves or the nervous system and -genic meaning resulting from or caused by. Aphasia is one type of a neurogenic cognitive-communicative disorder which presents with impaired comprehension and production of speech and language, usually caused by damage in the language-dominant, left hemisphere of the brain. Aphasia is any disorder of language that causes the patient to have the inability to communicate, whether it is through writing, speaking, or sign language.