Release Notes

Cortex 3.2 - January 2022
Support the new Insight 2.0 headset
Cortex 3.1.3 - December 2021
Support macOS 12.1
Cortex 3.1.1, 3.1.2 - December 2021
Bug fixes on some instances where the database cannot be initialised properly
Cortex 3.1 - December 2021
New method added syncWithHeadsetClock​
Cortex 3.0.1 - November 2021
No change in the Cortex API
Bug fixes, make the Bluetooth connection more stable
Cortex 3.0 - October 2021
No change in the Cortex API
EMOTIV App is now called EMOTIV Launcher​
Cortex 3.0 is not compatible with Windows 8. See the system requirements.
Cortex 2.7.3 - August 2021
Fixed the scaled value from Interest / Valance that may go out of range in some cases.
Fixed Focus / Stress performance metrics with EPOC X.
Cortex 2.7.2 - July 2021
No change in the Cortex API
Cortex 2.7.1 - May 2021
It is now possible to run all the detections with an EPOC Flex headset. This requires a specific EEG sensor mapping. See Data Subscription for details.
Cortex is now available for Raspberry Pi OS
Check the Getting Started page to see all the supported headsets and platforms.
Cortex 2.7.0 - April 2021
New data stream "eq" to get the EEG quality. See Data sample object. Please read this page to understand the difference between the contact quality and the EEG quality.
New label "BatteryPercent" added to the "dev" data stream. See Data sample object.
The method exportRecord is now available on iOS and Android
Cortex 2.6.4 - March 2021
Bug fixes
No change in the Cortex API
Cortex 2.6.3 - January 2021
New parameters added to the method exportRecord​
New parameters added to the method queryRecords​
Cortex is now available for Linux Ubuntu (Beta release)
Check the Getting Started page to see all the supported headsets and platforms.
Cortex 2.6.2 - December 2020
Solve an issue on macOS 11, where EMOTIV headsets couldn't connect by Bluetooth.
No change in the Cortex API
Cortex 2.6.1 - November 2020
No change in the Cortex API
Cortex 2.6.0 - September 2020
The sample rate of the data stream "dev" is now 2 hertz. See Data Subscription for details.
macOS 10.12 Sierra is not supported anymore. In order to install Cortex 2.6.0 you must upgrade your Mac to macOS 10.13 High Sierra or above.
Check the Getting Started page to see all the supported headsets and platforms.
Cortex 2.5.0 - June 2020
Support the new MN8 headset
Support for iOS and Android (Beta release, see the announcement for details)
New parameter title added to the method updateRecord​
In the method queryRecords, you can now order the records by their applicationId.
New warning code 112 and 113 
Check the Getting Started page to see all the supported headsets and platforms.
Cortex 2.4.0 - March 2020
Support the new EPOC X headset
New field headbandPosition added in the Headset object and the Record object (EPOC X only)
New method added updateHeadsetCustomInfo to set the position of the headband (EPOC X only)
New field customName added in the Headset object​
Change in the result of the method updateHeadset, new warning added to get the result of this method
New label overall in the device information sample object​
Cortex 2.3.0 - December 2019
New parameter includeFlexMappings added to the method queryHeadsets​
New field lastLoginTime added in the result of the method getUserLogin​
Cortex 2.2.1- October 2019
New method added configOptOut​
New parameter connectionType added to the method controlDevice​
New parameter experimentId added to the method createRecord​
New Warning added when the available space on the hard drive is too low
New Warning added when the opt-out configuration changes
New label isActive in the performance metrics sample object​
Cortex 2.2.0 - September 2019
This version didn't introduce any change in the API.
Cortex 2.1.1 - August 2019
New method added exportRecord​
Cortex 2.1.0 - August 2019
New methods added to manage the Subjects​
Changes from Cortex 1.x to Cortex V2.0
There are significant changes from Cortex API version 1.x to 2.0.
WebSocket URL
To connect to Cortex 1.x, you used the url wss://emotivcortex.com:54321
In Cortex 2.0, you must use wss://localhost:6868
See Connecting to the Cortex API for details.
Authentication
In Cortex 2.0, the user must login with EmotivID through the EMOTIV App. So, the API doesn't have a login or logout method anymore.
Third party applications must be approved by the user before using the Cortex API. See the new method requestAccess.
The method authorize doesn't accept "anonymous mode" anymore. You must provide a client id and client secret.
See Authentication for details.
Headsets
Call the method controlDevice to connect a headset to Cortex. If the headset is not connected, then you can't create a session with this headset.
See Headsets for details.
Miscellaneous
Some methods have been removed or renamed.
Method name in v1
Equivalent in v2
login, logout
See getUserLogin​
acceptLicense
The user must accept the EULA in EMOTIV App. You can call getUserInformation to check if the user already accepted the EULA or not
controlBluetoothHeadset
See controlDevice​
updateNote
See updateRecord​
The parameters and result format of some methods have changed. If you get an error when calling a method, please check its documentation.
Error Codes
cortexaccess tool
Last modified 3mo ago