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. 2021 May 11;8:605715. doi: 10.3389/frobt.2021.605715

Table 4.

Features of common robot products for cognitive training.

Name Physical appearance Multimodal sensing Multimodal feedback Available in market References
NAO Human-like Cameras;
Microphones;
Touch sensors		 Animation;
Conversation		 Yes Begum et al., 2015; Conti et al., 2015; Huskens et al., 2015; Ioannou et al., 2015; Miskam et al., 2015; Shukla et al., 2015, 2017; Sonntag, 2015; Taheri et al., 2015a, 2016, 2018, 2019, 2020; Valent́ı Soler et al., 2015; Zheng et al., 2015, 2016; Alemi et al., 2016; Tariq et al., 2016; Rudovic et al., 2017; Tsardoulias et al., 2017; van den Heuvel et al., 2017; David et al., 2018, 2020; Tsiakas et al., 2018; Ali et al., 2019; Marino et al., 2019; Sandygulova et al., 2019; Tleubayev et al., 2019; Alnajjar et al., 2020; Pino et al., 2020
Pepper Human-like Cameras;
Microphones;
Touch sensors;
Infrared sensors		 Animation;
GUI;
Conversation;
Eye color changing		 Yes Nunez et al., 2015; Paletta et al., 2018; Carros et al., 2020; Manca et al., 2020; Nault et al., 2020; Schüssler et al., 2020
KASPAR Human-like Visual;
Touch sensors		 Animation;
Conversation;
Facial expression		 No Huijnen et al., 2016; Wood et al., 2017
Paro Animal-like Auditory sensor;
Touch sensor;
Light sensor;
Posture sensor		 Animation;
Sounds		 Yes Sung et al., 2015; Valent́ı Soler et al., 2015; Yu et al., 2015; Aminuddin et al., 2016
Probo Animal-like Cameras;
Microphones;
Touch sensors		 Animation;
GUI;
Conversation;
Facial expression		 No Cao et al., 2015
CuDDler Animal-like Camera;
Microphones		 Animation;
Sounds		 No Kajopoulos et al., 2015; Wong and Zhong, 2016
iRobiQ Human-like Camera;
Microphone;
Touch sensors		 Animation;
GUI;
Conversation;
Facial expression		 Yes Yun et al., 2016; Ahn et al., 2017
Silbot Human-like Camera;
Microphones		 Animation;
GUI;
Conversation		 Yes Kim et al., 2015; Law et al., 2019b
Mero Human-like Cameras;
Microphone		 Animation;
GUI;
Conversation;
Facial Expression		 No Kim et al., 2015
Lego robot Not applicable (Building bricks) Changeable, Color sensor;
Touch sensors;
Infrared sensor		 Changeable, Auditory; Tablet;
Animation		 Yes Andruseac et al., 2015; Demetriadis et al., 2016; Lopez-Samaniego and Garcia-Zapirain, 2016; Garcia-Sanjuan et al., 2017; D'Amico and Guastella, 2019; Lins et al., 2019
RAMCIP Human-like Camera;
Microphone;
Laser scanners		 GUI;
Conversation;
Facial expression		 No Kostavelis et al., 2015; Peleka et al., 2018
Jibo Unfamiliar Cameras;
Microphones		 GUI;
Communication;
Spin in 360°		 Yes Scassellati et al., 2018
Vän Robotics Human-like Camera Animation;
Communication		 Yes Mois et al., 2020
RoboKind Human-like Cameras;
Microphones;
Touch sensors		 Animation;
Conversation;
Facial expressions		 Yes Taheri et al., 2015a, 2018; Salvador et al., 2016
Keepon Snowman-like Cameras;
Microphone;
Touch sensors		 Animation;
Sounds		 Yes Costescu et al., 2015
CARO Human-like Cameras;
Microphones;
Touch sensors		 GUI;
Eye emotional expressions		 No Yun et al., 2016
Kompaï Human-like Cameras;
microphones		 GUI;
Communication		 Yes Agrigoroaie et al., 2016
InO-Bot Turtle-like Proximity sensors;
Line follower sensors		 Light (LED);
Auditory		 Yes D'Amico and Guastella, 2019