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Cross-Modal Multivariate Pattern Analysis

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Published on: November 9, 2011

Cross-modal performance: behavioural processes, phylogenetic considerations and neural mechanisms.

G Ettlinger¹, W A Wilson

¹Department of Psychology, University of Bielefeld, F.R.G.

Behavioural Brain Research

|November 30, 1990

Summary

Cross-modal performance (CMP) research suggests task variables, not training, affect performance. Neurological evidence points to modality-specific system

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Area of Science:

Neuroscience
Comparative Psychology
Cognitive Science

Background:

Cross-modal performance (CMP) research has explored distinctions based on training procedures.
Previous studies investigated how task variables influence CMP levels.

Purpose of the Study:

To examine cross-modal performance (CMP) from phylogenetic and neurological perspectives.
To investigate the mechanisms underlying CMP, including potential neural pathways.

Main Methods:

Phylogenetic comparisons across species (humans, apes, monkeys, non-primates).
Analysis of task variables affecting performance.
Examination of neurological mechanisms, including polysensory convergence and neural 'leakage'.

Main Results:

Phylogenetic differences in CMP were not consistently supported across species.
Task variables significantly affect CMP, similar to within-modal studies.
Evidence for modality-specific neural localization is weak; neural 'leakage' is proposed as a mechanism, potentially involving the ventral claustrum.

Conclusions:

CMP is influenced by task variables, with no clear phylogenetic distinctions across primates and non-primates.
Neural 'leakage' between modality-specific systems, possibly via the ventral claustrum, is a proposed mechanism for CMP.
Further research is needed on potential phylogenetic and ontogenetic differences in CMP, such as metaphorical matching and developmental timing of categorical vs. specific CMP.