Semantic impairment disrupts perception, memory, and naming of secondary but not primary colours

NEUROPSYCHOLOGIA

卷:70

Article

Rogers, Timothy T.¹  Graham, Kim S.²  Patterson, Karalyn^3,4 

[1] Univ Wisconsin, Dept Psychol, Madison, WI 53706 USA

[2] Cardiff Univ, Sch Psychol, Wales Inst Cognit Neurosci, Cardiff CF10 3AT, S Glam, Wales

[3] Univ Cambridge, Dept Clin Neurosci, Neurol Unit, Addenbrookes Hosp, Cambridge CB2 0SZ, England

[4] MRC Cognit & Brain Sci Unit, Cambridge CB2 7EF, England

关键词: Semantics;    Colour perception;    Dementia;   

DOI  :  10.1016/j.neuropsychologia.2015.01.010

来源: Elsevier

【 摘 要 】

To investigate how basic aspects of perception are shaped by acquired knowledge about the world, we assessed colour perception and cognition in patients with semantic dementia (SD), a disorder that progressively erodes conceptual knowledge. We observed a previously undocumented pattern of impairment to colour perception and cognition characterized by: (i) a normal ability to discriminate between only subtly different colours but an impaired ability to group different colours into categories, (ii) normal perception and memory for the colours red, green, and blue but impaired perception and memory for colours lying between these regions of a fully-saturated and luminant spectrum, and (iii) normal naming of polar colours in the opponent-process colour system (red, green, blue, yellow, white, and black) but impaired naming of other basic colours (brown, gray, pink, and orange). The results suggest that fundamental aspects of perception can be shaped by acquired knowledge about the world, but only within limits. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

【 授权许可】

Free