Tactile Pattern Discrimination at Adjacent Locations along the Proximal — Distal Axis of the Index Finger

Perception ◽  
10.1068/p5385 ◽  
2006 ◽  
Vol 35 (1) ◽  
pp. 125-136 ◽  
Author(s):  
David T Horner
Keyword(s):  
Index Finger ◽  
Pattern Discrimination ◽  
Tactile Pattern

Tactile Pattern Delivery Device to Investigate Cognitive Mechanisms for Early Detection of Alzheimer’s Disease

2011 ◽  
pp. 89-97
Author(s):  
Jiajia Yang ◽  
Takashi Ogasa ◽  
Jinglong Wu ◽  
Yasuyuki Ohta ◽  
Koji Abe
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Early Detection ◽  
Pattern Discrimination ◽  
Shape Discrimination ◽  
Cognitive Mechanisms ◽  
Delivery Device ◽  
Novel Approach ◽  
Tactile Pattern ◽  
Early Alzheimer’S Disease

The cognitive symptoms in early Alzheimer’s disease (AD) involve problems with learning, memory or planning. Currently, no medical tests are available to conclusively diagnose dementia pre-mortem. Previous studies have demonstrated that the cognitive deficits of AD can be detected during a preclinical period with neuropsychological tests. This chapter’s hypothesis is that cognitive deficit symptoms of AD are detectable using a combination of tactile, kinetic, cognitive, and functional MRI tasks in the earliest stages of the disease. The authors of this chapter offer a novel approach to investigate the early detection of AD with tactile procedures. This chapter introduces the development of two tactile pattern delivery devices. The first delivery device is MRI-compatible and can serve to investigate the underlying neural mechanisms of active and passive tactile pattern discrimination. The second delivery device is designed to investigate the characteristics of passive shape discrimination for psychological experiments. These devices may contribute to the early detection of AD with neuropsychological approaches. The ultimate goal of this research was to confirm the human ability of tactile shape discrimination and determine the differences between age-matched healthy individuals and AD patients.

Sequences of cortical activation for tactile pattern discrimination using magnetoencephalography

Neuroreport ◽  
2009 ◽  
Vol 20 (10) ◽  
pp. 941-945 ◽  
Author(s):  
Catherine L. Reed ◽  
Donald J. Hagler ◽  
Ksenija Marinkovic ◽  
Anders Dale ◽  
Eric Halgren
Keyword(s):  
Pattern Discrimination ◽  
Cortical Activation ◽  
Tactile Pattern

Masking, Information Integration, and Tactile Pattern Perception: A Comparison of the Isolation and Integration Hypotheses

Perception ◽  
1993 ◽  
Vol 22 (4) ◽  
pp. 483-496 ◽  
Author(s):  
Douglas P Mahar ◽  
Brian D Mackenzie
Keyword(s):  
Information Integration ◽  
Pattern Discrimination ◽  
Spatial Separation ◽  
Pattern Perception ◽  
Temporal Separation ◽  
Perceptual Integration ◽  
Pattern Processing ◽  
Close Proximity ◽  
Tactile Pattern ◽  
Competing Models

Two competing models of the effects of pattern element proximity, masking, and perceptual integration on the discriminability of spatiotemporal vibrotactile patterns are compared. Kirman's ‘integration hypothesis' predicts that pattern perception is facilitated by a process of perceptual integration which requires that pattern elements be presented in close spatial and temporal proximity. Conversely, the ‘isolation hypothesis' predicts that the strong masking effects which occur when pattern elements are presented in close proximity impede the perception of patterns. Traditional masking studies do not provide a fair test of these two hypotheses because they rely on methods that measure the subject's ability to identify the target when the target is presented in conjunction with the mask, rather than the discriminability of the complex percept resulting from the integration of the target and mask. To account for this, a new procedure was devised where the amount of interelement masking and the discriminability of the pattern as a whole were measured independently as the spatial and temporal separation of the pattern elements were varied. As expected under both hypotheses, masking between pattern elements increased as either the spatial or the temporal separation between them was decreased. The pattern discrimination data also support the isolation hypothesis in that the patterns were discriminated less well with increasing temporal element separation with a similar but nonsignificant trend in the case of spatial separation. It is concluded that this new methodology should be applied to a wider range of tactile pattern processing situations in order to assess the generality of the results obtained.

Activation of ventrolateral somatosensory cortex for tactile pattern discrimination using MEG

NeuroImage ◽  
2000 ◽  
Vol 11 (5) ◽  
pp. S688 ◽  
Author(s):  
Catherine L. Reed ◽  
Eric Halgren ◽  
R.H. Dhond ◽  
David Post ◽  
Kim Paulson ◽  
...  
Keyword(s):  
Somatosensory Cortex ◽  
Pattern Discrimination ◽  
Tactile Pattern

Spatial Pattern Discrimination in Rats

2003 ◽  
Author(s):  
Kelly A. Digian ◽  
Michael Brown
Keyword(s):  
Spatial Pattern ◽  
Pattern Discrimination

Discharge Pattern Discrimination for Composite Insulation System in Vacuum

2016 ◽  
Vol 136 (9) ◽  
pp. 594-602 ◽  
Author(s):  
Fei Kong ◽  
Hiroki Kojima ◽  
Toshinori Kimura ◽  
Mitsuru Tsukima ◽  
Naoki Hayakawa
Keyword(s):  
Pattern Discrimination ◽  
Discharge Pattern ◽  
Insulation System

Heterodigital Free Flap of Index Finger Amputee for Coverage of the Long Finger Soft Tissue Defect

2013 ◽  
Vol 22 (2) ◽  
pp. 82-85 ◽  
Author(s):  
So-Min Hwang ◽  
Jang Hyuk Kim ◽  
Hong-Il Kim ◽  
Yong-Hui Jung ◽  
Hyung-Do Kim
Keyword(s):  
Soft Tissue ◽  
Free Flap ◽  
Index Finger ◽  
Soft Tissue Defect ◽  
Tissue Defect
Sign in / Sign up

Export Citation Format

Share Document