SENSORY RATINGS AND SENSITIVITY TO PERCEPTUAL VARIABLES: NOVEL APPROACH TO EVALUATING SEMANTIC MEMORY IN MILD COGNITIVE IMPAIRMENT.

The lexical-semantic impairments at different levels of semantic processing are often observed in Mild cognitive impairment (MCI). To better understand the nature of the lexical-semantic impairment in MCI, this study included two experiments: a sensory rating task and a lexical decision task. Twenty individuals diagnosed with MCI were recruited as well as eighty healthy subjects to serve as a control group.

Do shared semantic features facilitate Lexical-semantic processing in early course psychosis?

The lexical-semantic relatedness effect supposes different activation in the semantic memory of related versus unrelated word-pairs. Semantically related pairs are considered to result in a larger spread of activation as the activation of concept nodes is dependent on shared lexical-semantic features of concepts. The increased activation of concepts in the semantic memory in individuals with schizophrenia is found to be, faster spreading and lacking in inhibition in relation to healthy control subjects.