Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-cost Active Dry-Contact Surface EMG Sensor for Bionic Arms   Surface electromyography (sEMG) is a popular bio-signal used for controlling
prostheses and finger gesture recognition mechanisms. Myoelectric prostheses
are costly, and most commercially available sEMG acquisition systems are not
suitable for real-time gesture recognition. In this paper, a method of
acquiring sEMG signals using novel low-cost, active, dry-contact, flexible
sensors has been proposed. Since the active sEMG sensor was developed to be
used along with a bionic arm, the sensor was tested for its ability to acquire
sEMG signals that could be used for real-time classification of five selected
gestures. In a study of 4 subjects, the average classification accuracy for
real-time gesture classification using the active sEMG sensor system was 85%.
The common-mode rejection ratio of the sensor was measured to 59 dB, and thus
the sensor's performance was not substantially limited by its active circuitry.
The proposed sensors can be interfaced with a variety of amplifiers to perform
fully wearable sEMG acquisition. This satisfies the need for a low-cost sEMG
acquisition system for prostheses.

10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph