System and method for inducing sleep by transplanting mental states
A system for replicating a mental state of a first subject in a second subject comprising: a memory storing a captured mental state of the first subject represented by brain activity patterns; and a stimulator for producing a stimulus dependent on the captured mental state adapted to replicate the mental state of the first subject in the second subject by inducing the brain activity patterns in the second subject.
1 . A system for inducing a selected mental state from at least one mental state of a donor comprising the selected mental state in a subject using brainwave patterns from the donor, comprising:
an electroencephalographic input port configured to receive captured brainwave patterns from a donor, the brainwave patterns comprising neural correlates of the at least one mental state of the donor during capture of the brainwave patterns;
at least one automated processor communicatively coupled to the input port, and being configured to:
determine the selected mental state;
process the captured brainwave patterns from the donor, to automatically selectively extract the neural correlates of the at least one mental state of the donor comprising the selected mental state, comprising a set of time-varying superposed signal components from the captured brainwave patterns together corresponding to the at least one mental state of the donor;
extract a subset of the set of time-varying superposed signal components together corresponding to the selected mental state; and
define a sensory stimulus pattern for presentation to the subject, the sensory stimulus pattern being selectively dependent on the selected mental state and the extracted subset of components of the set of time-varying superposed signal components, and being configured to entrain the brainwaves of the subject with the defined sensory stimulus pattern in a manner that the neural correlates of the subject having entrained brainwaves correspond to the neural correlates of the donor for the selected metal state; and
a sensory stimulator, configured to generate a sensory stimulus selected from the group consisting of at least one of audio, visual, and tactile, configured to stimulate the subject according to the defined sensory stimulus pattern and entrain the brainwaves of the subject with the selected sensory stimulus pattern, inducing the selected mental state in the subject.
2 . The system according to claim 1 , wherein the subset of the set of time-varying superposed signal components comprise at least one of a set of principal components and a set of independent components, and the sensory stimulator concurrently presents at least two concurrent sensory stimuli to the subject.
3 . The system according to claim 1 , wherein the subset of the set of time-varying superposed signal components is a set of spatial principal components, and the at least one automated processor is further configured to perform a signal component rotation on the set of spatial principal components.
4 . The system according to claim 1 , wherein the subset of the set of time-varying superposed signal components comprises an orthogonal basis set.
5 . The system according to claim 1 , wherein the sensory stimulator comprises at least one of a visual stimulator and an auditory stimulator configured to present to the subject at least one of a visual stimulus and an auditory stimulus modulated based on the subset of the set of time-varying superposed signal components.
6 . The system according to claim 1 , wherein the donor is a different person than the subject.
7 . The system according to claim 1 , wherein the at least one processor is further configured to perform a blind decomposition of the captured brainwave patterns from the donor.
8 . The system according to claim 1 , wherein the at least one automated processor is further configured to automatically extract the subset of the set of time-varying superposed signal components using nonlinear dimensionality reduction.
9 . The system according to claim 1 , wherein the at least one automated processor is further configured to determine the sensory stimulus pattern with an autoencoder.
10 . The system according to claim 1 , wherein the sensory stimulator comprises an audio stimulator configured to entrain the brain of the subject with an isochronic tone or binaural beats audio pattern comprising a frequency in a range between 7.5-150 Hz.
11 . The system according to claim 1 , wherein the selected mental state is sleep, wherein the sensory stimulator is configured to stimulate the subject, according to the sensory stimulus pattern, to achieve sleep in the subject.
12 . A system for inducing a selected mental state in a subject from at least one mental state of a donor comprising the selected mental state, comprising:
an electroencephalographic input port configured to receive captured brainwave patterns from at least one donor comprising a set of time-varying signal components, the brainwave patterns comprising neural correlates of the at least one mental state of the at least one donor during capture of the brainwave patterns;
at least one automated processor, configured to:
select the mental state;
process the captured brainwaves from the at least one donor, to automatically:
reduce a dimensionality of the brainwave patterns from the at least one donor to define a subset of the set of time-varying signal components of the brainwave patterns by extraction of the subset of the set of time-varying signal components that together selectively correspond to the neural correlates of the at least one mental state of the at least one donor comprising the selected mental state; and
determine a subject-dependent sensory stimulus pattern for presentation to the subject, comprising the subset of the set of time-varying signal components that together selectively correspond to the at least one mental state of the at least one donor; and
a sensory stimulator, configured to present the subject-dependent sensory stimulus pattern to the subject, and entrain the subject with the subject-dependent sensory stimulus pattern to induce the subject to achieve the selected mental state.
13 . The system according to claim 12 , wherein the at least one automated processor is further configured to determine at least one dominant frequency of the brainwave patterns, and the sensory stimulus pattern comprises a sensory stimulus modulated with the at least one dominant frequency of the brainwave pattern.
14 . The system according to claim 12 , further comprising:
a memory, configured to store a plurality of the subsets of the set of time-varying signal components, each respective subset of the set of time-varying signal components representing a respectively different mental state of the at least one donor; and
the at least one automated processor is further configured to:
define a sequence of the different mental states of the at least one donor;
determine a brainwave characteristic of the subject;
retrieve the respective subsets of the set of time-varying signal components corresponding to the sequence of different mental states of the at least one donor from the memory; and
determine, for the sequence of the different mental states of the at least one donor, the subject-dependent sensory stimulus pattern dependent on the brainwave characteristic of the subject, configured to induce the sequence of respective different mental states of the at least one donor in the subject.
15 . A system for inducing a mental state of a donor in a subject, comprising:
an electroencephalographic input port configured to receive captured signals representing a brainwave pattern from the donor, the brainwave pattern comprising neural correlates of the mental state of the donor during capture of the brainwave pattern;
at least one automated processor, configured to:
process the captured brainwave pattern from the donor, to determine the neural correlates of the mental state of the donor, comprising a set of time-varying superposed signal components from the captured brainwave pattern;
extracting a subset of the set of time-varying superposed signal components together corresponding to the mental state of the donor; and
define a sensory stimulus pattern selectively dependent on the extracted subset of the set of time-varying superposed signal components together corresponding to the mental state of the donor, and being configured to entrain the brainwaves of the subject with the defined sensory stimulus pattern; and
a sensory stimulator, configured to generate a sensory stimulus selected from the group consisting of at least one of audio, visual, and tactile, to stimulate the subject with the defined sensory stimulus pattern.
16 . The system according to claim 15 , wherein the subset of the set of time-varying superposed signal components comprise at least one of a set of principal components and a set of independent components, and the sensory stimulator is configured to concurrently present at least two concurrent sensory stimuli of different modality.
17 . The system according to claim 15 , wherein the subset of the set of time-varying superposed signal components are extracted by the at least one automated processor using factor analysis.
18 . The system according to claim 15 , wherein the subset of the set of time-varying superposed signal components comprises an orthogonal basis set.
19 . The system according to claim 15 , wherein the sensory stimulator comprises a visual stimulator and an auditory stimulator configured to concurrently output a visual stimulus and an auditory stimulus to the subject.
20 . The system according to claim 15 , wherein the sensory stimulator comprises an audio stimulator configured to entrain the brain of the subject with an isochronic tone or binaural beats audio pattern.