Perceptual agnosiasIntroductionAgnosis is a clinical condition characterized by a perceptual disorder located at an intermediate stage between the primary sensory defect and general intellectual dysfunction (Hécaen & Albert, 1978; Mather, 2009). Agnosias are described as the loss of the ability to recognize objects, people, sounds, shapes or smells while the specific sense is not impaired or there is significant memory loss ( Mather, 2009). A person may have a deficit in visual and hearing abilities. The olfactory, somatosensory system and even the senses of hearing, smell or touch function normally (Gazzaniga, Ivry & Mangun, 2014). The term was coined by Sigmund Freud, who derived it from the Greek a – (“without”) and agnosis (“knowledge”). According to Riddoch et al. (2008) agnosias were first described by Liassauer in 1890. Liassauer (1890) proposed the existence of apperceptive agnosia, Kussmaul (1877) first described a patient with pure word deafness and Bernard (1889) noted an amusia. Since then, many other cases have been reported (Mendez and Geehan, 1988). Auditory Agnosia Auditory agnosia is a rare cortical hearing loss and cognitive disorder. It refers to the inability to recognize sounds, non-verbal and/or acoustic stimuli despite adequate hearing measured by standard audiometry. Auditory agnosia is also defined as the inability to process environmental sounds and speech, in the absence of aphasia and defective recognition of auditory stimuli in the context of preserved hearing (Hécaen & Albert 1978; Motomura, Yamadori, Mori, & Tamaru, 1986; Clinical reports of auditory agnosia in patients include inability to recognize...... middle of paper.... ...J. (2001). Compensatory coding of body part locations in autotopagnosia: Evidence for extrinsic egocentric coding. Cognitive Neuropsychology, 18(4), 363-381.Shoemaker, WJ (2012). The social network of the brain and human moral behavior. Zygon: Journal Of Religion & Science, 47(4), 806-820. Villarejo, A., Martin, V., Moreno-Ramos, T., Camacho-Salas, A., Porta-Etessam, J. and Bermejo - Pareja, F. (2011). Mirror misidentification in a patient without dementia: evidence of right hemispheric and bifrontal lesions. Neurocase, 17(3), 276-284. Ward, J. (2010). The student's guide to cognitive neuroscience. (2nd ed.). Hove: Psychology Press. Zhang, Q., Kaga, K., and Hayashi, A. (2011). Auditory agnosia due to severe long-term hydrocephalus caused by spina bifida - specific versus non-specific auditory pathway. Oto-Laryngological Acta, 131(7), 787-792.