IEEE Robotics & Automation Magazine - March 2023 - 88

local storage gathers data measurements. The unified modeling
language (UML) sequence diagram shows the interactions
among software components. The conceptual view of this
schema is represented in the following UML sequence diagram
(Figure 4). The boxes contain an abstraction of the System@Home
components, while the arrows explain in which
phase of user-system interaction one component relates to
another component.
(a)
THERAPEUTIC PLAN IMPLEMENTATION
Based on the user-system interaction model, the aphasia
rehabilitation exercises were executed by the patient, following
his/her personal treatment plan.
The user, standing or sitting in front of the System@
(b)
FIGURE 3. Examples. Scenario representation during an aphasia
exercise: (a) preliminary instructions and (b) cognitive choices.
Translation of instructions in (a): " Understanding of words through
images. Select the image corresponding to the word shown
above. " Translation of instructions in (b): " Select: dog. "
Control
1: Instructions()
2 : Positioning and Gesture()
3 : Demonstration Video()
5 : Measurement Activation()
4 : Exercise Execution()
User Interface
Aphasia
Algorithm
Home, activates the system and executes aphasia rehabilitation
exercises depending on the rehabilitation plan. In aphasia
exercises, the objective is to stimulate language and cognitive
functions. A given exercise can be performed once, twice, or
more times, depending on the intensity of the treatment. Each
exercise has a specific goal.
The control component of the system evaluates the correctness
of the responses based on the graphic metaphor selected
and provides visual feedback in real time to inform the patient
about his/her performance during the interactive session.
Results are stored in the System@Home to be sent to the service
center for an asynchronous clinical assessment.
For the formalization of the speech
Local
Storage
6 : Data Measurement()
7 : Performance Meter()
8 : Measure()
therapy intervention, a series of 28
different exercises based on eight
domains were taken into consideration.
The choice of exercises to be
implemented was based on a rating
procedure performed by the clinical
and technical staff, aimed at assigning
a priority value summarizing the
clinical importance, feasibility, and the
possibility of integration on the SmartCARE
platform. The eight domains
on which the exercises were based
were: 1) auditory comprehension of
words, 2) auditory comprehension of
sentences, 3) reading comprehension
of words, 4) reading comprehension
of sentences, 5) production of spoken
words, 6) production of spoken sentences,
7) production of written words,
and 8) production of written sentences.
The evaluation carried out through the
rating procedure gave priority to the
implementation of nine types of exercises
related to four domains of the
eight considered (Table 1).
Therefore, these exercises have
FIGURE 4. UML sequence diagram: user interaction control flow. The yellow box represents
the software control component for aphasia presented in this article.
88 IEEE ROBOTICS & AUTOMATION MAGAZINE MARCH 2023
been modeled on the relationship
mechanisms between the input stimuli
(writings, images, sounds), the
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