Apperceptive Apperceptive<unk>  has typically been used to describe cases of acquired<unk>  with some of the earliest processes in the face perception system. The brain areas thought to play a critical role in apperceptive<unk>  are right occipital temporal regions. People with this disorder cannot make any sense of faces and are unable to make same–different judgments when they are presented with pictures of different faces. They are unable to recognize both familiar and unfamiliar faces. In addition, apperceptive sub-types of<unk>  struggle recognizing facial emotion. However, they may be able to recognize people based on non-face clues such as their clothing, hairstyle, skin color, or voice. Apperceptive<unk>  is believed to be associated with impaired fusiform gyrus. Experiments on the formation of new face detectors in adults on face-like stimuli (learning to distinguish the faces of cats) indicate that such new detectors are formed not in the fusiform, but in the lingual gyrus. Associative Associative<unk>  has typically been used to describe cases of acquired<unk>  with spared perceptual processes but impaired links between early face perception processes and the semantic information humans hold about people in our memories. Right anterior temporal regions may also play a critical role in associative<unk> . People with this form of the disorder may be able to tell whether photos of people's faces are the same or different and derive the age and sex from a face (suggesting they can make sense of some face information) but may not be able to subsequently identify the person or provide any information about them such as their name, occupation, or when they were last encountered. Associative<unk>  is thought to be due to impaired functioning of the parahippocampal gyrus. Developmental Developmental<unk>  (DP), also called congenital<unk>  (CP), is a face-recognition deficit that is lifelong, manifesting in early childhood, and that cannot be attributed to acquired brain damage. While developmental<unk>  begins early in life, many people do not realize that they have DP until later in their adult lives. A number of studies have found functional deficits in DP both on the basis of EEG measures and fMRI. It has been suggested that a genetic factor is responsible for the condition. The term "hereditary<unk> " was introduced if DP affected more than one family member, essentially accenting the possible genetic contribution of this condition. To examine this possible genetic factor, 689 randomly selected students were administered a survey in which seventeen developmental<unk> s were quantifiably identified. Family members of fourteen of the DP individuals were interviewed to determine<unk> -like characteristics, and in all fourteen families, at least one other affected family member was found. In 2005, a study led by Ingo Kennerknecht showed support for the proposed congenital disorder form of<unk> . This study provides epidemiological evidence that congenital<unk>  is a frequently occurring cognitive disorder that often runs in families. The analysis of pedigree trees formed within the study also indicates that the segregation pattern of hereditary<unk>  (HPA) is fully compatible with autosomal dominant inheritance. This mode of inheritance explains why HPA is so common among certain families (Kennerknecht et al. 2006).
Prosopagnosia
Apperceptive agnosia
Integrative agnosia
Phonagnosia
Finger agnosia
Visuospatial dysgnosia
Autotopagnosia
Metamorphopsia