SEQUENTIAL PROCESSING OF ITEMS AND RELATIONS

Eichenbaum et al. (1994a) hypothesized that perceptually distinct item s and the relations among them are processed sequentially by the parah ippocampal region and the hippocampal formation, respectively. Predict ions based solely on their model's sequential-processing feature might prove easier to disconfirm than those based on its representational f eatures. Two such predictions are discussed: (1) double dissociations should be impossible following hippocampal vs. parahippocampal lesions , and (2) hippocampal lesions should not exacerbate impairments that f ollow complete parahippocampal lesions.