scholarly journals Facial expression perception correlates with verbal working memory function in schizophrenia

2015 ◽  
Vol 69 (12) ◽  
pp. 773-781 ◽  
Author(s):  
Kumiko Hagiya ◽  
Tomiki Sumiyoshi ◽  
Ayako Kanie ◽  
Shenghong Pu ◽  
Koichi Kaneko ◽  
...  
Keyword(s):  
Working Memory ◽  
Facial Expression ◽  
Memory Function ◽  
Verbal Working Memory ◽  
Expression Perception ◽  
Facial Expression Perception

scholarly journals EMPATH: A Neural Network that Categorizes Facial Expressions

2002 ◽  
Vol 14 (8) ◽  
pp. 1158-1173 ◽  
Author(s):  
Matthew N. Dailey ◽  
Garrison W. Cottrell ◽  
Curtis Padgett ◽  
Ralph Adolphs
Keyword(s):  
Neural Network ◽  
Facial Expression ◽  
Facial Expressions ◽  
Categorical Perception ◽  
Dimensional Space ◽  
Parameter Tuning ◽  
Expression Recognition ◽  
Psychological Phenomena ◽  
Expression Perception ◽  
Facial Expression Perception

There are two competing theories of facial expression recognition. Some researchers have suggested that it is an example of “categorical perception.” In this view, expression categories are considered to be discrete entities with sharp boundaries, and discrimination of nearby pairs of expressive faces is enhanced near those boundaries. Other researchers, however, suggest that facial expression perception is more graded and that facial expressions are best thought of as points in a continuous, low-dimensional space, where, for instance, “surprise” expressions lie between “happiness” and “fear” expressions due to their perceptual similarity. In this article, we show that a simple yet biologically plausible neural network model, trained to classify facial expressions into six basic emotions, predicts data used to support both of these theories. Without any parameter tuning, the model matches a variety of psychological data on categorization, similarity, reaction times, discrimination, and recognition difficulty, both qualitatively and quantitatively. We thus explain many of the seemingly complex psychological phenomena related to facial expression perception as natural consequences of the tasks' implementations in the brain.

Investigating the brain basis of facial expression perception using multi-voxel pattern analysis

Cortex ◽  
2015 ◽  
Vol 69 ◽  
pp. 131-140 ◽  
Author(s):  
Martin Wegrzyn ◽  
Marcel Riehle ◽  
Kirsten Labudda ◽  
Friedrich Woermann ◽  
Florian Baumgartner ◽  
...  
Keyword(s):  
Facial Expression ◽  
Pattern Analysis ◽  
The Brain ◽  
Expression Perception ◽  
Facial Expression Perception

Fractionation of Verbal Memory Impairment in Schizophrenia and Schizophreniform Psychosis

2007 ◽  
Vol 41 (9) ◽  
pp. 732-739 ◽  
Author(s):  
Stephen J. Wood ◽  
Aleks U. Tarnawski ◽  
Tina M. Proffitt ◽  
Warrick J. Brewer ◽  
Greg R. Savage ◽  
...  
Keyword(s):  
Working Memory ◽  
Associative Learning ◽  
Verbal Memory ◽  
Memory Performance ◽  
Memory Function ◽  
Verbal Working Memory ◽  
First Episode ◽  
Story Recall ◽  
Associate Learning ◽  
The Impact

Objectives: The characterization, aetiology, and course of verbal memory deficits in schizophrenia remain ill defined. The impact of antipsychotic medications is also unclear. The purpose of the present paper was to investigate verbal memory performance in established schizophrenia (SZ) and first-episode schizophreniform psychosis (FE). Method: Performances of 32 SZ and 33 FE patients were compared to those of 47 healthy volunteers on measures of verbal working memory, verbal associative learning and story recall. Results: Story recall deficits, but not deficits in working memory or paired associate learning, were demonstrated by both patient groups. Patients treated with typical neuroleptics had more impairment in associative learning with arbitrary word pairings than those treated with atypicals, regardless of patient group. Conclusions: The results are consistent with the notion that some neuropsychological impairment is present at the time of psychosis onset and that this impairment is non-progressive. However, deficits may be specific to subclasses of memory function.

Sign in / Sign up

Export Citation Format

Share Document